# Matrices

# Matrices: Operation: Remove the Bread Basket Quiz

Think you’ve got your head wrapped around

*? Put your knowledge to the test. Good luck — the Stickman is counting on you!***Matrices**Q. -

*x*– 5*y*= 4*x* + 2*y* = 6

Make a coefficient matrix for the above equations:

3

-3

Q. If 3

*x*–*y*= 5 and 2*x*– 2*y*= 5 then:D

_{x}= 4D

_{y}= 4D = 4

D = 5

None of the above

Q. What is the equation for finding y using Cramer's Rule?

*y*= D/D

_{y}

*y*= D/D

_{z}

*y*= D

_{y}/D

*y*= D

_{x}/D

*y*= D

_{z}/D

_{y}

Q. If your coefficient determinant is zero:

You have miscalculated the coefficient determinant

You won't get specific values for

*x*and*y*You know the lines represented by the equations are parallel or zero

B and C, but not A

None of the above

Q. Cramer's Rule states that:

None of the above