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What is the dimension (order) of the matrix shown?

• ( 2 x 2 )

• ( 1 x 2 )

• ( 2 x 1 )

• ( 2 x 4 )

Perform the operation if possible.

• A

• B

• C

• D

Perform the operations if possible.

• A

• B

• C

• D

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

• w = 13, x = 4, y = 7, z = 23
• w = 13, x = -4, y = 11, z = 23
• w = 13, x = 4, y = 11, z = 23
• w = 13, x = 4, y = 11, z = 17

What is the entry at r₃₁?

• 3

• 1

• 4

• 7

• 
• 
• 
• Not enough info

Find the product of the two matrices.

• 1   2
  6   -8
• -3   -5
  -5   -11
• -2     8
  -6   -12
• 2  -3
  5   -2

Find the product of the matrices.

• A
• B
• C
• D

Perform the operation if possible.

• A

• B

• C

• D

How many columns are in a 5 x 4 matrix?

• 5
• 4
• 20
• 9