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2. Linear Equations, Vector Operations, TF, Coplanar, Conic, equ

Total questions: 151

Worksheet time: 2hrs 46mins

Name
Class
Date
1.

Solve the system of linear equations

a)

No unique solution

b)

c)

d)

no solution
notice the 0

2.
a)

x= 1; y= 2; z=3;

b)

x=1; y=2 z=4

c)

x=-2 y=1 z=-3

d)

x=-2 y=4 z=1

e)

x=-3 y=0 z=4

3.

Solve the system of linear equations A = [5, 16; 3, 8] No unique solution

4 lines
4.

Solve the system of linear equations A = [2, 4; 1, 6]

a)

No unique solution

b)

idk

5.

Solve the system of linear equations A = [0, 2; -1, 1] No unique solution

4 lines
6.

Solve the system of linear equations A = [0, 2; -1, 1] No unique solution

4 lines
7.

Solve the system of linear equations A = [0, 2; -1, 1] No unique solution

4 lines
8.

Solve the system of linear equations A = [0, 2; -1, 1] No unique solution

4 lines
9.

Solve the system of linear equations A = [0, 2; -1, 1] No unique solution

4 lines
10.

Solve the system of linear equations A = [0, 2; -1, 1] No unique solution

4 lines
11.

Solve the system of three linear equations (if the solution x=1,y=2,z=3, then write 1,2,3 without brackets and empty places): 6 = 2 + 3; 1 + 3 = 2 + 7; 3 = 2 + 1

(a)  

12.

Solve the system of three linear equations (if the solution x=1,y=2,z=3, then write 1,2,3 without brackets and empty places): -3 = 4 + 4; 4 = 2 + 3; 2 = 2 + 2

(a)  

13.

Solve the system of three linear equations (if the solution x=1,y=2,z=3, then write 1,2,3 without brackets and empty places): 3 = 2 + 5; 6 = 4 + 2; 12 = 3 + 2

(a)  

14.

Solve the system of three linear equations (if the solution x=1,y=2,z=3, then write 1,2,3 without brackets and empty places): -7 = 2 + 3; 1 = 3 + 2; 3 = 2 + 1

(a)  

15.

Solve the system of three linear equations (if the solution x=1,y=2,z=3, then write 1,2,3 without brackets and empty places): -2 = 4 + 4; 2 = 2 + 3; 3 = 2 + 2

(a)  

16.

Solve the system of three linear equations (if the solution x=1,y=2,z=3, then write 1,2,3 without brackets and empty places): -3 = 1 + 3; 2 = 3 + 2; 3 = 2 + 1

(a)  

17.

Solve the system of three linear equations (if the solution x=1,y=2,z=3, then write 1,2,3 without brackets and empty places): 4 = 1 + 5; 6 = 2 + 2; 3 = 2 + 1

(a)  

18.

Solve the system of three linear equations (if the solution x=1,y=2,z=3, then write 1,2,3 without brackets and empty places): 1 = 2 + 3; 2 = 3 + 2; 3 = 2 + 1

(a)  

19.

Solve the system of three linear equations (if the solution x=1,y=2,z=3, then write 1,2,3 without brackets and empty places): 11 = 2 + 3; 10 = 2 + 3; 14 = 3 + 2

(a)  

20.

Solve the system of three linear equations (if the solution x=1,y=2,z=3, then write 1,2,3 without brackets and empty places): 4 = -2 - 2; 1 = 2 + 2; 3 = 2 + 1

(a)  

21.

Solve the system of three linear equations (if the solution x=1,y=2,z=3, then write 1,2,3 without brackets and empty places): -5 = 0 - 2; 10 = 10 - 4; 6 = 4 - 3

(a)  

22.

Solve the system of three linear equations (if the solution x=1,y=2,z=3, then write 1,2,3 without brackets and empty places):

4 lines
23.

Solve the system of three linear equations (if the solution x=1,y=2,z=3, then write 1,2,3 without brackets and empty places):

4 lines
24.

Solve the system of three linear equations (if the solution x=1,y=2,z=3, then write 1,2,3 without brackets and empty places):

4 lines
25.

Solve the system of three linear equations (if the solution x=1,y=2,z=3, then write 1,2,3 without brackets and empty places):

4 lines
26.

Let a=(1,2,3),b=(0,-1,2). Find 2a-b.

a)

(2,5,-1)

b)

(2,4,5)

c)

(2,5,4)

d)

(2,-1,4)

e)

(4,5,2)

27.

Let a=(1,2,3),b=(0,-1,2). Find 2a+2b.

a)

(2,5,-1)

b)

(2,2,-10)

c)

(2,2,10)

d)

(-2,-1,4)

e)

(4,10,2)

28.

Let a=(1,2,3),b=(0,-1,2). Find a-3b.

a)

(1,5,-1)

b)

(-1,2,-10)

c)

(1,5,-3)

d)

(-1,-1,4)

e)

(4,1,2)

29.

Let a=(1,2,3),b=(0,-1,2). Find (1/2)a-4b.

a)

(1/2,5,11/2)

b)

(-1/2,2,-13)

c)

(1/2,5,-13/2)

d)

(-1,-1,4)

e)

(3/2,1,2)

30.

Let a=(1,2,4),b=(0,-1,2). Find 3a+b.

a)

(3,5,-13/2)

b)

(-3,2,-13)

c)

(3,5,14)

d)

(-1,-1,4)

e)

(3/2,1,2)

31.

Scalar or dot product of a=(1,2,3),b=(0,-1,2) is

a)

11

b)

5

c)

4

d)

7

e)

6

32.

Scalar or dot product of a=(-1,-2,3),b=(0,-1,2) is

a)

11

b)

4

c)

8

d)

7

e)

6

33.

Scalar or dot product of a=(1,-2,-3),b=(0,-1,2) is

a)

(0,2,-6)

b)

-3

c)

-4

d)

7

e)

(1,2,-6)

34.

Scalar or dot product of a=(1,5,-3),b=(1,-1,2) is

a)

11

b)

(1,-5,-6)

c)

-10

d)

7

e)

(-1,5,6)

35.

Scalar or dot product of a=(1,5,0),b=(1,-1,2) is

a)

11

b)

(1,-5,-6)

c)

-4

d)

7

e)

(-1,5,6)

36.

Scalar or dot product of a=(1,0,-3),b=(1,-1,2) is

a)

3

b)

(1,0,-6)

c)

-5

d)

-6

e)

(-1,5,6)

37.

Find the cross product of a=(1,-2,-3) and b=(0,-1,2)

a)

(-7,2,-1)

b)

-4

c)

(-7,-2,-1)

d)

-3

e)

(-1,2,-1)

38.

Find the cross product of a=(4,1,-3) and b=(0,-1,2)

a)

(-1,8,-4)

b)

-7

c)

(-1,-8,-4)

d)

-3

e)

(0,-1,-6)

39.

Find the cross product of a=(1,-2,4) and b=(5,-2,1)

a)

(6,-19,8)

b)

13

c)

(6,19,8)

d)

3

e)

(5,4,4)

40.

Find the area of a triangle formed by vectors a=(-1,2,-2) and b=(2,1,-1).

a)

5√2

b)

√50

c)

5√2/2

d)

5

e)

√2

41.

Find the area of a triangle formed by vectors a=(3,3,0) and b=(0,0,2).

a)

6√2

b)

√72

c)

3√2

d)

3

e)

√2

42.

Find the area of a parallelogram formed by vectors a=(1,2,1) and b=(3,0,3).

a)

3√2

b)

1/2√72

c)

6√2

d)

3

e)

√2

43.

Find the triple (or mix) product of vectors a=(1,-2,4), b=(5,-2,1), c=(1,2,0).

a)

38

b)

40

c)

44

d)

36

e)

42

44.

Find the triple (or mix) product of vectors a=(-1,-2,1), b=(5,-2,1), c=(1,2,0).

a)

-8

b)

10

c)

12

d)

6

e)

4

45.

Find the triple (or mix) product of vectors a=(-1,-2,1), b=(0,-2,3), c=(1,2,0).

a)

4

b)

1

c)

2

d)

6

e)

-2

46.

Find the volume of a pyramid constructed on vectors a=(1,2,1), b=(3,0,3), c=(2,0,-1).

a)

0

b)

36

c)

3

d)

6

e)

18

47.

Find the volume of a pyramid constructed on vectors a=(0,3,4), b=(3,0,3), c=(2,0,-1).

a)

6

b)

27

c)

9/2

d)

9

e)

27/2

48.

Find the volume of a parallelepiped constructed on vectors a=(0,-1,4), b=(3,0,3), c=(2,0,-1).

a)

6

b)

27

c)

9

d)

9/2

e)

27/2

49.

Simplify i×(j+k).

a)

j

b)

k

c)

k-j

d)

k+j

e)

i

50.

Simplify -j×(i+k).

a)

k+i

b)

k

c)

k-i

d)

j

e)

k-j

51.

Simplify k×(i+j+k).

a)

j+k

b)

i-k

c)

j-i

d)

j+k

e)

j

52.

Simplify i×(2j-k).

a)

j

b)

2k

c)

2k+j

d)

k+j

e)

2k-j

53.

Simplify -j×(i-2k).

a)

k-2i

b)

2k+i

c)

k+2i

d)

j

e)

k-j

54.

Simplify k×(i+j+k).

a)

j+k

b)

i−k

c)

j−i

d)

j+i

e)

j

55.

Simplify i×(2j−k).

a)

j

b)

2k

c)

2k+j

d)

k+j

e)

2k−j

56.

Simplify −j×(i−2k).

a)

k−2i

b)

2k+i

c)

k+2i

d)

j

e)

k−j

57.

Simplify k×(i−2k).

a)

j+k

b)

i−k

c)

j

d)

j+i

e)

j−i

58.

Let a=(1,0,4), b=(0,−4,5). Find 3a−b.

a)

(3,4,−7)

b)

(7,4,3)

c)

(3,−4,9)

d)

(1,−4,−1)

e)

(3,4,7)

59.

Let a=(3,2,−1), b=(9,7,0). Find 2a+b.

a)

(15,11,−2)

b)

(15,−11,2)

c)

(12,9,−1)

d)

(15,−5,−1)

e)

(12,−3,−2)

60.

Let a=(5,−1,0), b=(3,4,2). Find a+2b.

a)

(8,3,2)

b)

(2,−5,−2)

c)

(11,7,4)

d)

(−11,−4,2)

e)

(−1,5,2)

61.

Let a=(−9,2,−1), b=(−3,4,2). Find a−3b.

a)

(0,10,7)

b)

(−6,−2,−3)

c)

(−6,2,−3)

d)

(0,−10,−7)

e)

(−18,6,−3)

62.

Let a=(4,3,1), b=(2,8,0). Find 2a−b.

a)

(2,−5,1)

b)

(6,11,1)

c)

(10,14,2)

d)

(−6,2,−2)

e)

(6,−2,2)

63.

Scalar or dot product of a=(7,9,10), b=(1,0,3) is.

a)

27

b)

37

c)

7

d)

−37

e)

−17

64.

Scalar or dot product of a=(5,6,5), b=(4,2,3) is.

a)

43

b)

37

c)

13

d)

47

e)

25

65.

Scalar or dot product of a=(−3,4,1), b=(0,2,0) is.

a)

4

b)

5

c)

9

d)

18

e)

8

66.

Scalar or dot product of a=(−1,0,4), b=(3,2,1) is.

a)

1

b)

11

c)

−1

d)

21

e)

13

67.

Scalar or dot product of a=(9,6,1), b=(4,2,−7) is.

a)

11

b)

55

c)

41

d)

37

e)

14

68.

Scalar or dot product of a=(2,3,0), b=(0,4,1) is.

a)

11

b)

22

c)

2

d)

21

e)

12

69.

Find the cross product of a=(7,2,1) and b=(5,3,0).

a)

(−3,5,11)

b)

41

c)

(−3,−5,7)

d)

42

e)

(5,−3,11)

70.

Find the cross product of a=(4,0,2) and b=(3,−1,4).

a)

(−2,10,4)

b)

20

c)

(10,−2,−4)

d)

19

e)

(2,−10,−4)

71.

Find the cross product of a=(2,3,1) and b=(4,6,7).

a)

(−10,15,0)

b)

33

c)

(15,−10,0)

d)

23

e)

(8,18,7)

72.

Find the cross product of a=(5,6,10) and b=(−1,0,2).

a)

(−12,20,−3)

b)

(12,−20,6)

c)

15

d)

(20,−12,4)

e)

(−5,0,20)

73.

Find the area of a triangle formed by vectors a=(3,−3,6) and b=(2,1,4).

a)

√74

b)

√5

c)

9√5/2

d)

9√5

e)

19√5/2

74.

Find the area of a triangle formed by vectors a=(−1,3,1) and b=(2,−5,1).

a)

6√4

b)

√74

c)

3√2

d)

3

e)

√74/2

75.

Find the area of a parallelogram formed by vectors a=(−1,2,4) and b=(2,0,3).

a)

√173/2

b)

√173

c)

21

d)

7√3

e)

√153/4

76.

Find the area of a parallelogram formed by vectors a=(5,2,0) and b=(−2,1,3).

a)

4√38

b)

√332

c)

8√4

d)

3√38

e)

√342/2

77.

Find the triple (or mix) product of vectors a=(5,3,1), b=(4,0,2), c=(3,1,−5).

a)

42

b)

72

c)

12

d)

48

e)

−36

78.

Find the triple (or mix) product of vectors a=(4,2,0), b=(−10,3,1), c=(4,2,7).

a)

124

b)

24

c)

−220

d)

224

e)

−112

79.

Determine the cosine of the angle between a =(3,-4,-1) and b=(0,5,2).

a)

22/26

b)

29/−

c)

20/21

d)

27/−

e)

There no correct answer.

80.

Determine the projection of b=(2,1,-1) and a =(1,0,-2).

a)

48( , 0, )55−

b)

(1, 0, 2)−(−∞,−4]∪[−3,+∞)

c)

4/5−[−3,+∞)

d)

4(1, 0, 2)5−

e)

There no correct answer.

81.

Find the scalar (or dot) product of vectors u=(2, 3), v=(5, -7).

(a)  

82.

Suppose that u * (v x w )=3. Find (u x w) * v.

(a)  

83.

Find |U x V|. U =(1, -5, 4), V=(3, 3, 3).

(a)  

84.

Are the planes 4x – y + 2z = 5 and 7x – 3y + 4z =8 parallel?

a)

No

b)

Yes(−∞,−4]∪[−3,+∞)

85.

Are the planes x – 4y – 3z -2 = 0 and 3x – 12y – 9z – 7 = 0 parallel?

a)

No

b)

Yes(−∞,−4]∪[−3,+∞)

86.

Which of the vectors a=(1,2), b=(−1,2), c=(4,8) are collinear?

a)

a and b

b)

b and c

c)

a and c

d)

None of them

e)

a,b,c

87.

Which of the vectors a=(−1,2), b=(1,−2), c=(4,8) are collinear?

a)

a and b

b)

b and c

c)

a and c

d)

None of them

e)

a,b,c

88.

Which of the vectors a=(1,3), b=(−1,2), c=(4,8) are collinear?

a)

a and b

b)

b and c

c)

a and c

d)

None of them

e)

a,b,c

89.

Find the value of n where the vectors a=(2,4), b=(n,1) are perpendicular.

a)

2

b)

1

c)

−2

d)

−4

e)

0

90.

=(4,8) are collinear?

a)

a⃗andb⃗

b)

b⃗andc⃗

c)

a⃗andc⃗

d)

None of them

e)

a⃗,b⃗,c⃗

91.

Find the value of n where the vectors a⃗=(2,4),b⃗=(n,1) are perpendicular.

a)

2

b)

1

c)

-2

d)

-4

e)

0

92.

Find the value of n where the vectors a⃗=(2,4,1),b⃗=(n,1,-8) are perpendicular.

a)

-2

b)

1

c)

2

d)

-4

e)

0

93.

Which of the vectors a⃗=(-1,3),b⃗=(2,1),c⃗=(-4,8) are perpendicular?

a)

a⃗andb⃗

b)

b⃗andc⃗

c)

a⃗andc⃗

d)

None of them

e)

a⃗,b⃗,c⃗

94.

Calculate the value of a for the points (a, 0, 1), (0, 1, 2), (1, 2, 3) and (7, 2, 1) so that they are coplanar.

a)

a = 2

b)

a = 1

c)

a = -2

d)

a = -1

95.

Calculate the value of x for the coplanar set of points A = (0, 0, 1), B = (0, 1, 2), C = (-2, 1, 3) and D = (x, x−1, 2).

a)

x = 3

b)

x = 1

c)

x = -3

d)

x = 4

96.

Which of the following statements are true?

a)

The three vectors are coplanar, if their triple product is zero

b)

The three vectors are coplanar, if their triple product is not equal to zero

c)

Vectors are coplanar if among them more than two linearly independent vectors

d)

The three vectors are coplanar if they are linearly independent

e)

The three vectors are coplanar, if dot product of two of them not equal to zero

97.

Which of the following statements are true?

a)

The three vectors are coplanar, if they are linearly dependent

b)

The three vectors are coplanar, if their triple product is not equal to zero

c)

Vectors are coplanar if among them more than two linearly independent vectors

d)

The three vectors are coplanar if they are linearly independent

e)

The three vectors are coplanar, if dot product of two of them not equal to zero

98.

Which of the following statements are true?

a)

Two vectors are collinear if the relations of their coordinates are equal

b)

Vectors are collinear if the mixed product is equal to one

c)

Vectors are collinear if the mixed product is equal to zero

d)

Vectors are collinear if the cross product is not equal to zero vector

e)

Two vectors are collinear if there is no relation of their coordinates

99.

Which of the following statements are true?

a)

Two vectors are collinear if there exists some number n such that a = n*b

b)

Vectors are collinear if the mixed product is equal to one

c)

Vectors are collinear if the mixed product is equal to zero

d)

Vectors are collinear if the cross product is not equal to zero vector

e)

Two vectors are collinear if there is no relation of their coordinates

100.

Which of the following statements are true?

a)

Vectors are collinear if their cross product is equal to the zero vector

b)

Vectors are collinear if the mixed product is equal to one

c)

Vectors are collinear if the mixed product is equal to zero

d)

Vectors are collinear if the cross product is not equal to zero vector

e)

Two vectors are collinear if there is no relation of their coordinates

101.

Find undefined expressions (2 correct answers)

a)

-50%

b)

50%

c)

-50%

d)

50%

102.

Find coplanar vectors. (2 correct answers)

a)

50%a = 2i + 3j+ k, b = i - j, c = 7i + 3j + 2k

b)

50%a = (1, 2, -1), b = (2, 4, -2), c = (1, 1, -3)

c)

-50%a = i + 3j+ k, b = i - j, c = 6i + 3j + 2k

d)

-50%a = (1, -3 , 1), b = (2, -3, 5), c = (1, -1, 2)

103.

For the following vectors find right answers. (2 correct answers) u = (1, 3, −1), v = (3, 7, −7), w = (1, 2, −3)

a)

Linearly dependent vectors

b)

Linearly independent vectors

c)

Basis vectors

d)

Coplanar vectors

104.

For the following vectors find right answers. (2 correct answers) u = (1, 4, 5), v = (1, 1, 0), w = (3, 6, 8)

a)

Linearly dependent vectors

b)

Linearly independent vectors

c)

Basis vectors

d)

Coplanar vectors

105.

For the following vectors find right answers. (2 correct answers) u = (1, 3, −1), v = (3, 7, −7), w = (1, 2, −3)

a)

Linearly dependent vectors

b)

Linearly independent vectors

c)

Basis vectors

d)

Coplanar vectors

106.

For the following vectors find right answers. (2 correct answers) u = (1, 4, 5), v = (1, 1, 0), w = (3, 6, 8)

a)

Linearly dependent vectors

b)

Linearly independent vectors

c)

Basis vectors

d)

Coplanar vectors

107.

For the following vectors find right answers. (2 correct answers) u = (1, 4, 5), v = (1, 1, 0), w = (3, 6, 8)

a)

Linearly dependent vectors

b)

Linearly independent vectors

c)

Basis vectors

d)

Coplanar vectors

108.

For the following vectors find right answers. (2 correct answers) u = (1, 3, −1), v = (3, 7, −7), w = (1, 2, −3)

a)

Linearly dependent vectors

b)

Linearly independent vectors

c)

Basis vectors

d)

Coplanar vectors

109.

The eccentricity of a conic section is 1. The conic section must be:

a)

An ellipse

b)

A hyperbola

c)

A circle

d)

A parabola

110.

The eccentricity of a conic section is 1,5. The conic section must be:

a)

An ellipse

b)

A hyperbola

c)

A circle

d)

A parabola

111.

The eccentricity of a conic section is 0,4. The conic section must be:

a)

An ellipse

b)

A hyperbola

c)

A circle

d)

A parabola

112.

The eccentricity of a conic section is 0. The conic section must be:

a)

An ellipse

b)

A hyperbola

c)

A circle

d)

A parabola

113.

Write an equation for the ellipse with each set of characteristics. Vertices (4; 3), (4; -9); length of minor axis is 8

a)

(1/36)(x^2) + (1/16)(y^2) = 1

b)

(1/16)(x^2) + (1/36)(y^2) = 1

c)

(1/36)(x^2) + (1/16)(y^2) = 2

d)

(1/16)(x^2) + (1/36)(y^2) = 2

114.

Write an equation for the ellipse with each set of characteristics. foci (-6; 9), (-6; -3); length of major axis is 20

a)

(1/100)(x^2) + (1/64)(y^2) = 1

b)

(1/16)(x^2) + (1/64)(y^2) = 1

c)

(1/64)(x^2) + (1/100)(y^2) = 1

d)

(1/100)(x^2) + (1/36)(y^2) = 1

115.

Write an equation for the ellipse with each set of characteristics. Co-vertices (-13; 7), (-3; 7); length of major axis is 16

a)

(1/64)(x^2) + (1/25)(y^2) = 1

b)

(1/25)(x^2) + (1/64)(y^2) = 1

c)

(1/64)(y^2) + (1/100)(x^2) = 1

d)

(1/100)(y^2) + (1/36)(x^2) = 1

116.

Write an equation for the ellipse with each set of characteristics. foci (-10; 8), (14; 8); length of major axis is 30

a)

(1/81)(x^2) + (1/225)(y^2) = 1

b)

(1/225)(x^2) + (1/64)(y^2) = 1

c)

(1/64)(y^2) + (1/225)(x^2) = 1

d)

(1/100)(y^2) + (1/81)(x^2) = 1

117.

Write an equation for a circle that satisfies each set of conditions. Center at (-1; 7) and diameter 6

a)

(x + 1)^2 + (y - 7)^2 = 9

b)

(x - 0.5)^2 + (y - 0.5)^2 = 9

c)

(x - 0.5)^2 + (y + 0.5)^2 = 9

d)

(x - 0.5)^2 + (y + 0.5)^2 = 36

118.

Write an equation for a circle that satisfies each set of conditions. Center at (2; 0), endpoints of diameter at (-5; 0) and (9;0)

a)

(x - 2)^2 + (y - 0)^2 = 49

b)

(x - 0)^2 + (y - 0)^2 = 9

c)

(x - 0)^2 + (y - 0)^2 = 81

d)

(x - 5)^2 + (y - 0)^2 = 25

119.

Write the standard form of the equation for each ellipse. The vertices are at (-10; 0) and (10; 0), and the eccentricity e is 3/5.

a)

(1/100)(x^2) + (1/64)(y^2) = 1

b)

(1/100)(y^2) + (1/64)(x^2) = 1

c)

(1/100)(x^2) + (1/64)(y^2) = 2

d)

(1/25)(y^2) + (1/10)(x^2) = 1

120.

Write the standard form of the equation for each ellipse. The co-vertices are at (0; 1) and (6; 1), and the eccentricity e is 4/5.

a)

(1/25)(x^2) + (1/9)(y^2) = 1

b)

(1/9)(x^2) + (1/25)(y^2) = 1

c)

(1/9)(y^2) + (1/25)(x^2) = 1

d)

(1/9)(x^2) + (1/25)(y^2) = 2

121.

Find the coordinates of points where a line intersects a circle, 9 + x = y, o (-2; 7) and (-5; 4), ● (-2; 7) and (-9; 0), o (-1; 8) and (2; 11), o (-3; 6) and (-5; 4)

a)

(-2; 7) and (-5; 4)

b)

(-2; 7) and (-9; 0)

c)

(-1; 8) and (2; 11)

d)

(-3; 6) and (-5; 4)

122.

Find the coordinates of points where a line intersects a circle, 1 + x = y, o (-2; 3) and (-5; 6), ● (-2; 3) and (6; -5), o (-1; 2) and (2; -1), o (-3; 4) and (-5; 6)

a)

(-2; 3) and (-5; 6)

b)

(-2; 3) and (6; -5)

c)

(-1; 2) and (2; -1)

d)

(-3; 4) and (-5; 6)

123.

Determine type of a curve represented by the equation 2x^2 + 3y^2 - 4x + 6y - 7 = 0.

a)

parabola

b)

hyperbola

c)

ellipse

d)

point

e)

two parallel lines

124.

Determine type of a curve represented by the equation x^2 - y^2 - 4x + 2y - 4 = 0.

a)

parabola

b)

hyperbola

c)

ellipse

d)

point

e)

two parallel lines

125.

Determine type of a curve represented by the equation x^2 - y^2 - 4x + 2y + 3 = 0.

a)

parabola

b)

hyperbola

c)

ellipse

d)

two perpendicular lines

e)

point

126.

Determine type of a curve represented by the equation x^2 + y^2 - 6x - 2y + 10 = 0.

a)

parabola

b)

hyperbola

c)

ellipse

d)

two perpendicular lines

e)

point

127.

Determine type of a curve represented by the equation x^2 - 6x - 2y + 10 = 0.

a)

parabola

b)

hyperbola

c)

ellipse

d)

point

e)

two perpendicular lines

128.

Find the center and radius of a circle x^2 + y^2 - 6x + 4y - 23 = 0.

a)

center (3; −2) and radius is √10

b)

center (3;2) and radius is √23

c)

center (3;−2) and radius is 6

d)

center (−3;2) and radius is 6

e)

center (3;2) and radius is 36

129.

Find the center and radius of a circle x^2 + y^2 + 5x - 7y + 5^2 = 0.

a)

center(5/2; −7/2)and radius is √10

b)

center(−5/2; 7/2) and radius is √32

c)

center(−5/2; 7/2)and radius is 4

d)

center(5/2; −7/2)and radius is 4

e)

center(5/2; 7/2)and radius is 16

130.

Find the center and radius of the circle x^2 + y^2 − 4x + 2y = −1.

a)

center (1; −2) and radius is 2

b)

center (−1;2) and radius is 4

c)

center (2; −1) and radius is 2

d)

center (−2;1) and radius is 4

e)

center (−2;1) and radius is 2

131.

Find the center and radius of the circle x^2 + y^2 + 4x − 4y = 0.

a)

center (2; −2) and radius is 2√3

b)

center (2; −2) and radius is 4

c)

center (−2;2) and radius is 2√2

d)

center (−2;2) and radius is 8

e)

center (2;2) and radius is 2√3

132.

Find the center and radius of the circle x^2 + y^2 + 4x = 0.

a)

center (0; 2) and radius is 2

b)

center (0; −2) and radius is 4

c)

center (−2;0) and radius is 2

d)

center (−2;0) and radius is 4

e)

center (0;−2) and radius is 2

133.

Find the canonical equation of an ellipse with parameters b=6, c=√28.

a)

x^2/64 + y^2/36 = 1

b)

x^2/36 + y^2/64 = 1

c)

x^2/64 - y^2/36 = 1

d)

x^2/36 - y^2/64 = 1

e)

x^2/36 + y^2/64 = 0

134.

Find the canonical equation of an ellipse with parameters b=2, c=4√2.

a)

x^2/4 + y^2/36 = 1

b)

x^2/36 + y^2/4 = 1

c)

x^2/4 - y^2/36 = 1

d)

x^2/36 - y^2/4 = 1

e)

x^2/36 + y^2/4 = 0

135.

Find the canonical equation of an ellipse with parameters a=4, c=3.

a)

x^2/7 + y^2/16 = 1

b)

x^2/16 + y^2/7 = 1

c)

x^2/7 - y^2/16 = 1

d)

x^2/16 - y^2/7 = 1

e)

x^2/16 - y^2/7 = 0

136.

Find the canonical equation of a hyperbola with parameters a=13, c/a=14/13.

a)

x^2/27 + y^2/169 = 1

b)

x^2/169 - y^2/27 = 1

c)

x^2/27 - y^2/169 = 1

d)

x^2/169 - y^2/27 = -1

e)

x^2/13 - y^2/27 = 1

137.

Find the canonical equation of a hyperbola with parameters b/a=3/4, c/a=5/4.

a)

x^2/9 + y^2/16 = 1

b)

x^2/16 - y^2/9 = 1

c)

x^2/9 - y^2/16 = 1

d)

x^2/16 - y^2/9 = -1

e)

x^2/4 - y^2/3 = 1

138.

Find the canonical equation of a hyperbola with parameters b=2√10, c=-11.

a)

x^2/40 + y^2/81 = 1

b)

x^2/81 - y^2/40 = 1

c)

x^2/9 - y^2/16 = 1

d)

x^2/40 - y^2/81 = -1

e)

x^2/9 - y^2/3 = 1

139.

Given the ellipse x^2/20 + y^2/5 = 1 and straight line y=x+3. This straight line intersects ellipse or not, if intersects then find the point of intersection?

a)

Yes, at points (−1; −4) and (11/5; −4/5)

b)

No

c)

Yes, at points (−4; −1) and (−4/5; 11/5)

d)

Yes, at points (−4; −1) and (−20; −17)

e)

Yes, at points (−1; −4) and (−17; −20)

140.

Given the ellipse x^2/4 + y^2/5 = 1 and straight line x=−2. This straight line intersects ellipse or not, if intersects then

4 lines
141.

Given the ellipse x^2/4 + y^2/5 =1 and straight line x=-2. This straight line intersects ellipse or not, if intersects then find the point of intersection?

a)

Yes, at points (-2;0) and (2;0)

b)

No

c)

Yes, at point (-2;0)

d)

Yes, at points (-2; -1) and (-2; -17)

e)

Yes, at points (-2; -4) and (-2; 0)

142.

Given the hyperbola x^2/9 - y^2/36 =1 and straight line y=-2x. This straight line intersects ellipse or not, if intersects then find the point of intersection?

a)

Yes, at points (-3√2; 3√2) and (3√2; -3√2)

b)

No

c)

Yes, at points (3√2; -3√2) and (-3√2; 3√2)

d)

Yes, at points (3√2; 3√2) and (-3√2; -3√2)

e)

Yes, at points (3√2; 3√2) and (-3√2; -3√2)

143.

Given the hyperbola x^2/9 - y^2/36 =1 and straight line x-1=0. This straight line intersects ellipse or not, if intersects then find the point of intersection?

a)

Yes, at points (-3√2; 3√2) and (3√2; -3√2)

b)

No

c)

Yes, at points (3√2; -3√2) and (-3√2; 3√2)

d)

Yes, at points (3√2; 3√2) and (-3√2; -3√2)

e)

Yes, at points (3√2; 3√2) and (-3√2; -3√2)

144.

Find the parameters a,b,c of ellipse represented by the equation 2x^2 + 3y^2 - 4x + 6y - 7=0.

a)

a=6, b=4, c=10

b)

a=6, b=4, c=2

c)

a=√6, b=2, c=√2

d)

a=√6, b=2, c=√10

e)

a=√6, b=4, c=12

145.

Find the parameters a,b,c of hyperbola represented by the equation 2x^2 - 3y^2 - 4x + 6y - 7=0.

a)

a=3, b=2, c=1

b)

a=3, b=2, c=5

c)

a=√3, b=√2, c=√5

d)

a=√3, b=√2, c=1

e)

a=√6, b=4, c=12

146.

Write canonical equation of the parabola, if its focus is at F(3,0)

a)

y^2 = 36x

b)

y^2 = 12x

c)

x^2 = 36y

d)

x^2 = 12y

e)

y^2 = -36x

147.

What is the equation of the circle centred at (3,4) and radius is equal to 5?

a)

22(3)(4)25xy− + − =

b)

22(3)(4)25xy + + + =

c)

22(3)(4)25xy + + − =

d)

22(3)(4)25xy + − − =

e)

22(3)(4)25xy − − − =

148.

What is the equation of the circle catered at (-4,3) and radius is equal to 1?

a)

5x^4 - 3x^2 + 7x^4 + 2x^3 + 1

b)

22(4)(3)1xy + + − =

c)

22(4)(3)1xy + + + =

d)

22(4)(3)1xy − + + =

e)

22(4)(3)1xy − + − =

149.

What is the equation of the circle, passing through the points (-1, 1), (3, 9), (8, 4)?

a)

22(3)(4)25xy− + − =

b)

22(3)(4)25xy + + + =

c)

22(3)(4)25xy + + − =

d)

22(3)(4)25xy + − − =

e)

22(3)(4)25xy − − − =

150.

What is the y - intercept of the circle 22(2)(5)16xy− + + =?

a)

(0, 5 2 3)−

b)

(2 3, 0)

c)

(0, 2 3)

d)

(0, 1 2 3)−

e)

(0, 2 2 3)

151.

Determine the center and radius: 22(4)(4)8xy− + − =?

a)

3 :(1,);:2 center radius r − =

b)

3 :(1,);:4 center radius r − =

c)

:(1, 3);:2 center radius r − =