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?

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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?

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

• 2

• 1/2

• -1/2

• -2

What is the value of t?

t=

What is the value of t?

t =

What is the value of t?

• 2

• 1

• -2

• 3

What is the value of t?

• 2

• 1

• -2

• -3