Matrices Unit Test

Solve the system using matrices
x + 2y = 2
5x - 6y = - 54

• (-6, 4)

• (-8, 4)

• (8, 4)

• (6, 4)

BA=

• Undefined

• 
• 
• 

• 
• undefined/not possible

• 
• 

The matrix A - B is

• 
• 
• 
• 

Determine whether the matrices are multiplicative inverses.

• Yes

• No

• Elevator

• Pi

Determine whether the matrices are multiplicative inverses.

• Yes

• No

• Workout

• Valut-Tech

Determine if the matrix has an inverse, if so find it.

• No

•  0   1
  -1   2

• -1   3
    1   -2

•   2   -1
  -1   1

Determine if the matrix has an inverse, if so find it.

• No

•  0   1
  -1   2

• -1   3
    1   -2

•   2   -1
  -1   1

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

• 8

• 9.01

• 6

• 1

How many columns are in a 5 x 4 matrix?

• 5

• 4

• 20

• 9