Free Printable Review Unit 1 (Matrices)

1.

a)

a

b)

b

c)

c

d)

d

2.

The number of columns in a 2x12 matrix is?

a)

10

b)

24

c)

12

d)

2

3.

In Matrix R (pictured) what is the value of element R_3,2

a)

8

b)

9.01

c)

6

d)

1

4.

a)

a

b)

b

c)

c

d)

d

5.

What must be true in order to ADD two matrices?

a)

They must be square.

b)

The dimensions must be equal.

c)

The determinant can't equal 0.

d)

The column of the 1st must equal the row of the 2nd.

6.

Can the operation be performed?

a)

Yes

b)

No

c)

Sometimes

d)

only your teacher knows

7.

You can multiply a 2x3 matrix by which matrix?

a)

2x2

b)

9x3

c)

3x12

d)

2x3

8.

Multipy.

a)

b)

c)

d)

undefined

9.

What do w, x, y and z equal in this matrix subtraction?

a)

w = 13, x = 4, y = 7, z = 23

b)

w = 13, x = -4, y = 11, z = 23

c)

w = 13, x = 4, y = 11, z = 23

d)

w = 13, x = 4, y = 11, z = 17

10.

What system of equations is represented by the matrix equation?

a)

b)

c)

d)

11.

This is an example of a

a)

System of Quadratic Equations

b)

Reduced Row Echelon Form

c)

Augmented Matrix

d)

A Canine Doing a Backflip

12.

Jeffrey wrote a matrix to represent his system of equations. What was his mistake

a)

The z's are not aligned correctly

b)

There should be a one in the top row for zero

c)

There should be a zero in the second column of the third representing the y

d)

Nothing. This is correct.

13.

Find the value of det (I).

a)

18

b)

-18

c)

-8

d)

8

14.

a)

(3, 0, 3)

b)

(5, -2, -3)

c)

(-1, 2, 3)

d)

(-4, 1, -3)

15.

What is the equation of the quadratic function that passes through the points (-2,-33), (2, -5), and (4, -39)?

a)

$y=2x^2-2x-4$

b)

$y=-2x^2+4x-33$

c)

$y=-4x^2+7x-3$

d)

$y=-5x^2+2x-4$

16.

Leigh has 18 bills (only ones, fives, and tens) in her wallet that total $114. She has twice as many tens and she has ones. How many five-dollar bills does she have?

a)

4

b)

6

c)

8

d)

10

17.

Find the area of a triangle with vertices in the coordinate plane located at (-2, -33), (2, -5), and (4, -39).

a)

-192

b)

-96

c)

96

d)

192

18.

a)

There are no direct flights from C to B, but there is an indirect flight (taking 2 flights)

b)

There is only one way to fly from city A to another city and then back again.

c)

There are no ways to travel from C to A (in 2 flights) other than the direct flight.

d)

You can fly from B to only one other city and get back to B again.

19.

a)

22x

b)

2x

c)

-2x

d)

-22x

20.

a)

A

b)

B

c)

C

d)

D

Review Unit 1 (Matrices)

Total questions: 20

Worksheet time: 1hrs 24mins

Similar Resources on Wayground