Quiz about Solving Linear Equations Using Matrix Inverse

Question 1

If matrices A and B are inverse of each other then

Accepted Answer

AB=BA=I

Answer

AB=BA

Answer

AB=BA=O

Answer

AB=O, BA= I

Question 2

Which option below correctly shows the steps to find the inverse of this matrix?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

No Inverse Exists

Question 3

Solve the following equation or state if there is no unique solution.

Accepted Answer

[-9] [9]

Answer

Undefined

Answer

[9] [-9]

Answer

[11] [-9]

Question 4

the matrix that gives you the identity matrix when multiplied by the original matrix

Accepted Answer

Multiplicative Inverse Matrix

Answer

Scalar Multiplication

Answer

Square Matrix

Answer

Multiplicative Identity Matrix

Question 5

The arrow points to what part of a Matrix Equation?

Accepted Answer

Coefficient Matrix

Answer

Variable Matrix

Answer

Constant Matrix

Answer

Vegetable Matrix

Question 6

Multiply: [A]^-1.[B]

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

A^-1 Does not Exist. It is Singular.

Question 7

Solve the system using matrices.

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 8

Solve the system using matrices.

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 9

Solve the system using inverse matrices or Cramer's rule.

-5x + 5y = -10

-7x + 4y = 13

Accepted Answer

(-7, -9)

Answer

(-7, -5)

Answer

(7, -9)

Answer

(-7, 5)

Question 10

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

Accepted Answer

y = 7

Answer

y = -7

Answer

y = -3

Answer

x = -3

Solving Linear Equations Using Matrix Inverse

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