Unit 10 Individual Practice

Which matrix makes the following statement true? [A]•[B]=[A]

For which matrix A is the following matrix equation always true? [A][M]=[M]

A 3×3 matrix M satisfies the equation [A][M] = [A] for all possible 3×3 matrices A. Which matrix M satisfies this equation?

Given that a 2 x 2 matrix M satisfies the equation [A][M] = [M] for all possible 2 x 2 matrices A, which matrix M satisfies this equation?

If $$\begin{bmatrix} -3 & 1 \ 2 & -7 \end{bmatrix}$$ *[B]= $$\begin{bmatrix} -3 & 1 \ 2 & -7 \end{bmatrix}$$ , then [B] equals:

Consider the matrix being multiplied by t. What is the value of t?

What is the value of t?

t=

(a)  

What is the value of t?

t =

(a)  

What is the value of t?

What is the value of t?