Matrices and Systems

Find the inverse.

• A

• B

• C

• D

Solve the system for the value of x.

5x + 8y = -12

3x + 5y = -7

• 1

• -1

• -4

• No solution

Solve the system of equations for the value of x.

y = 4x+1

3x + 2y = 13

• -1

• -5

• 1

• 5

Use matrices to solve the system of equations for the y-coordinate.

• y = -7

• y = -3

• y = 7

• x = -3

What is the determinant of this matrix?

• -2

• 2

• 10

• 24

Evaluate the determinant of the matrix.

• 695

• 284

• 392

• -179

• a

• b

• c

• d

Evaluate the determinant of the matrix.

• 68

• -49

• -83

• -75

Evaluate the determinant of the matrix.

• 40

• 30

• 20

• 10

If the order of matrix A is m×p and the order of matrix B is p×n. Then the order of matrix AB is

• m × n

• n × m

• n × p

• m × p