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8th Grade Final Practice Vavzincak

Total questions: 85

Worksheet time: 4hrs 20mins

Name
Class
Date
1.
A system has ____________ when two lines intersect at one point. 
a)
One solution
b)
No solution
c)
Infinitely Many Solution
2.
A system has ____________ when two equations are exactly the same and overlap each other.
a)
One solution
b)
No solution
c)
Infinitely Many Solution
3.
A system has ____________ when two equations have same slope but different y-intercept and are parallel. 
a)
One solution
b)
No solution
c)
Infinitely Many Solution
4.
To find a solution by graphing is to find the point where two lines intersect.
a)
True
b)
False
5.
What does it mean to substitute?
a)
to remember
b)
to replace or to plug in
c)
to get rid of or to take away
d)
to connect the dots
6.
Solve by using substitution method.
a)
(2, 7)
b)
(0, 1)
c)
(2/5, 9/5)
d)
(2, 5)
7.
Solve by using elimination method.
a)
(3, 1)
b)
( 5, -5)
c)
(2, 5)
d)
(15, 1)
8.
For equations below, which method is easier to use? Why?
a)
Graphing, because both are already in y = mx + b form.
b)
Substitution, because one equation is already solved for y. 
c)
Elimination, because both are already in ax + by = c form. 
d)
None. 
9.
What is the solution to the system?
a)
(0, 3)
b)
(1, -1)
c)
(-3, 1)
d)
(1, 3)
10.
What is the solution?
a)
(6, 3)
b)
(3, 6)
c)
(-6, 3)
d)
No solution
11.



How many solutions?
a)
One Solution
b)
No solution
c)
Infinitely Many Solutions
12.
What is the solution?
a)
One Solution
b)
No solution
c)
Infinitely Many Solutions
13.

Solve the system of equations.

(a)  

14.
What is the definition of function?
a)
Has inputs and outputs
b)
Every input has only ONE output
c)
Inputs have different outputs every time
d)
x-values and y-values
15.
a)
Function
b)
Not a Function
16.
All of the y values or outputs are called what?
a)
Domain
b)
Range
c)
Relation
d)
Function
17.
All of the x values or inputs are called what?
a)
Domain
b)
Range
c)
Relation
d)
Function
18.
Is this graph a function or not a function? 
a)
Function
b)
Not a Function
19.
Is this graph a function or not a function? 
a)
Function
b)
Not a Function
20.
Is this table a function or not a function? 
a)
Function
b)
Not a Function
21.
Which set of values is a function?
a)
(9,5) (10,5) (9,-5) (10,-5)
b)
(3,4) (4,-3) (7,4) (3, 8)
c)
(6,-5) (7, -3) (8, -1) (9, 1)
d)
(2, -2) (5, 9) (5, -7) (1, 4)
22.
Which ordered pair could you add to the following list of points to create a function?  (3, 5) (4, 9) (2, 5) 
a)
(3, 7)
b)
(4, 1) 
c)
(1, 9)
d)
(2, 6)
23.
Does the table represent a function?
a)
Yes, there  is a repeated x-value. 
b)
No, there aren't any repeated y-values. 
c)
Yes, there are repeated y-values. 
d)
No, there is a repeated x-value. 
24.
Is this graph a function or not a function? 
a)
Function 
b)
Not a Function
25.
a)
1
b)
2
c)
3
d)
4
26.
Which answer shows a reflection across the y-axis?
a)
a
b)
b
c)
c
d)
d
27.
The dashed figure is the image of the solid figure.  What is the Algebraic Notation for the Translation?
a)
(x, y) --> (x - 7, y + 4)
b)
(x, y) --> (x + 7, y - 4)
c)
(x, y) --> (x + 4, y - 7)
d)
(x, y) --> (7x, 4y)
28.

What type of transformation is this?

a)

Rotation

b)

Reflection

c)

Translation

d)

Enlargement

29.
What is this picture an example of? 
a)
An angle
b)
A cat vertex 
c)
Rotation 
d)
Dilation
30.

Which transformation enlarges or reduces a pre-image?

a)

Translation

b)

Rotation

c)

Reflection

d)

Dilation

31.

Which transformation flips an image across either the x or y axis?

a)

Translation

b)

Rotation

c)

Reflection

d)

Dilation

32.

Which transformation pivots a pre-image around the origin either clockwise or counter clockwise?

a)

Translation

b)

Rotation

c)

Reflection

d)

Dilation

33.

Which transformation preserves the size of a pre-image? (Chose the best answer)

a)

Rotation

b)

Translation

c)

Reflection and dilation

d)

Reflection, rotation, and translation

34.

What is the scale factor of the dilation shown?

a)

1/3

b)

1/2

c)

3

d)

2

35.
Solve for angle 5
a)
50
b)
55
c)
45
d)
60
36.
Solve for angle 7
a)
60
b)
50
c)
125
d)
55
37.
Solve for angle 2
a)
55
b)
50
c)
150
d)
125
38.
Solve for angle 2
a)
65
b)
60
c)
110
d)
115
39.
Angles 2 and 3 are what type of angles?
a)
Supplementary
b)
Complementary
c)
Vertical
d)
Acute
40.
Angles 1 and 2 are what type of angles?
a)
Supplementary
b)
Complementary
c)
Vertical
d)
Obtuse
41.
a)
65o
b)
30o
c)
115o
d)
180o
42.
Find the measure of the missing angle.
a)
47
b)
57
c)
53
d)
133
43.
A triangle's angles add up to...
a)
90 Degrees
b)
180 Degrees
c)
360 Degrees
d)
OVER 9000 Degrees
44.

Which of the following could be angle measures for a triangle?

A 120°, 50°, 20°

B 100°, 200°, 60°

C 30°, 50°, 80°

D 40°, 50°, 90°

a)

A

b)

B

c)

C

d)

D

45.
The Pythagorean Theorem ONLY works on which triangle? 
a)
obtuse
b)
scalene
c)
isosceles
d)
right
46.
The Pythagorean Theorem is
c2 = a2 - b2  
a)
false
b)
true
47.
What is the opposite of squaring a number?
a)
divide
b)
multiply 
c)
fractions
d)
square root
48.

Find the length of the missing side. (Calculators are allowed)

a)

17 cm

b)

22 cm

c)

15 cm

d)

13 cm

49.

In a right triangle __________is ALWAYS the longest side.

a)

a leg

b)

a hypotenuse

50.

Find the missing side. (Calculators are allowed)

a)

9

b)

41

c)

6.4

d)

3

51.

Find the missing side. (Calculators are allowed)

a)

48

b)

108

c)

83.6

d)

72

52.
Would a triangle with these side lengths be a right triangle?
4, 5, 6
a)
Yes
b)
No
53.
Find the volume of this shape
a)
1520.53
b)
276.46
c)
552.93
d)
6082.12
54.
Find the volume of the cone. Round your answers to the nearest tenth.
a)
127.3 yd3
b)
347.6 yd3
c)
287.7 yd3
d)
147.7 yd3
55.
Which cylinder will have a larger volume?
a)
Cylinder A
b)
Cylinder B
56.
Find the volume of the 3Dimensional shape
a)
904.32 ft3
b)
7,234.56 ft3
c)
150.72 ft3
57.

What is the trend for this scatter plot

a)

Negative

b)

Positive

c)

None

58.

About what should the number of manatees be by the year 2015?

a)

3000

b)

2500

c)

5000

d)

6000

59.
What is the type of association?
a)
Negative 
b)
no association
c)
positive 
60.
Which of the following lines represents the line of best fit for the scatter plot?
a)
A
b)
B
c)
C
d)
D
61.
What would be the correlation be between study time and test grades?
a)
positive correlation
b)
negative correlation
c)
no correlation
d)
cannot be determined
62.
Data points that are far away from most other points
a)
Cluster
b)
Outlier
c)
Correlation
d)
Scatter Plot
63.
What type of correlation is shown in the scatter plot?
a)
Positive Linear Correlation
b)
Negative Linear Correlation
c)
Non-Linear Correlation
d)
No Correlation
64.

Make a prediction for a resting heart rate after 6 hours of exercise a week.

a)

6

b)

50

c)

55

d)

80

65.
What percentage of girls have blonde hair?
a)
30%
b)
32%
c)
29%
d)
40%
66.
What percentage of the students were boys?
a)
20%
b)
25%
c)
40%
d)
50%
67.

How many more children prefer playing cricket than netball?

a)

1

b)

7

c)

6

d)

5

68.

What sport is the most popular?et

a)

Cricket

b)

Rugby

c)

Football

d)

Cricket and netball

69.

35 children were asked if they prefer cats or dogs. The data is shown in the table. How many girls prefer dogs?

a)

Don't have enough information

b)

2

c)

23

d)

29

70.

The table shows incomplete info about customers' orders in a cafe. How many women visited the cafe in total?

a)

37

b)

15

c)

22

d)

12

71.

What is the value of missing number 'b' in the table?

a)

8

b)

not enough info

c)

10

d)

12

72.

Which sport is least popular?

a)

netball

b)

rugby

c)

cricket

d)

rugby and netball

73.

The two-way table shows what food and/or drink customers bought from a stall. How many people bought only one item?

a)

9

b)

21

c)

2

d)

12

74.
Is the relation a function? 
{(4,5), (4,-7), (4,2), (4,0), (4,9)}
a)
Yes
b)
No
75.
Is this table a function or not a function? 
a)
Function
b)
Not a Function
76.
Is this a function? Explain.
a)
Yes; it passes the horizontal line test.
b)
No; it is not a straight line.
c)
Yes; it passes the vertical line test.
d)
No; there is a line connecting the dots.
77.
Which graph does NOT pass the vertical line test?
a)
Graph 1
b)
Graph 2
c)
Graph 3
d)
Graph 4
78.
Which set of values is a function?
a)
(9,5) (10,5) (9,-5) (10,-5)
b)
(3,4) (4,-3) (7,4) (3, 8)
c)
(6,-5) (7, -3) (8, -1) (9, 1)
d)
(2, -2) (5, 9) (5, -7) (1, 4)
79.

Which set of values is not a function?

a)

(9,5) (10,5) (4,-5) (8,-5)

b)

(3,4) (4,-3) (7,4) (3, 8)

c)

(6,-5) (7, -3) (8, -1) (9, 1)

d)

(2, -2) (5, 9) (-5, -7) (1, 4)

80.
What is the formula for the volume of a cylinder?
a)
V = 2πr²h
b)
V = πr²h
81.
Calculate the volume of the cylinder. Use 3.14 to approximate π. 
a)
250 cm³
b)
600 cm³
c)
785 cm³
82.
What is the formula for the volume of the given shape?
a)
V = 4/3 π  r ² h
b)
V = ⅓ π r² h 
83.
What is the volume of a cone with a radius of 3 cm and a height of 9 cm? Use 3.14 to approximate π. Round the nearest tenth.
a)
84.8 cm³
b)
 91 cm³
c)
30.4 cm ³
84.
What is the volume of a sphere with a radius of 3 m? Use 3.14 to approximate π. 
a)
113 m³
b)
 121 m³
c)
14 m³
85.
What is the formula for the volume of a sphere?
a)
V = 4/3 π r ³
b)
 V = 4πr²

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