Quiz Yourself on Matrices

What must be true in order to ADD two matrices?

• They must be square.
• The dimensions must be equal.
• The determinant can't equal 0.
• The column of the 1st must equal the row of the 2nd.

Tags

CCSS.HSN.VM.C.8

In Matrix R (pictured) what element is in the second row, third column?

• 8
• 9.01
• 6
• 1

You can multiply a 2X3 matrix by which matrix?

• 2X2
• 2X12
• 3X12
• 2X3

Tags

CCSS.HSN.VM.C.8

• 2x3

• 3x2

• 3x4

• 4x3

What is a₂₃ ?

• 14

• 4

• 1

• 3

Which sums can NOT be made from the following matrices ?

• A+A

• A+C

• B+D

• C+C

Tags

CCSS.HSN.VM.C.8

Which of the following products can NOT be made from these matrices ?

• AB

• BA

• BC

• BD

Tags

CCSS.HSN.VM.C.8

If A is a 2 × 3 matrix, and B is a 3 × 4 matrix, how many columns does AB have?

• 2

• 3

• 4

• AB is not defined

Tags

CCSS.HSN.VM.C.8

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

• 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 would be the dimension of the matrix product AB?

If A_1X4 and B_4X7

• 1X7

• 4X4

• 4X7

• 7X1

Tags

CCSS.HSN.VM.C.8