Matrices Equations

Solve for matrix Y.

• -4    9
  -11    9

• -4   9

  11   8

• 4   -9

  11   22

• -4   5

  11   -9

Find the product of the two matrices.

B * A

• 47     30
  9     5

• 47     30

  10    5

• 47   30

  9     1

• not possible because rows do not match columns

Solve for matrix Z.

• A

• B

• C

• D

Solve for matrix X.

• A

• B

• C

• D

Find the product of the matrices.

• A

• B

• C

• D

Find the product of the matrices.

• A

• B

• C

• D

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.

In Matrix R (pictured) what element is a₂₃?

• 8

• 9.01

• 6

• 1

What do m, n, p and q equal in this scalar matrix multiplication?

• m=8, n=9, p=-4, q=4 

• m=15, n = -45, p=20, q=-5

• m=20, n=-5, p=15, q=-45

• m=-5, n=20, p=-45, q=15

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