Matrix Review Adding and Subtraction

Which of the matrix operations could NOT be performed? Check all that apply!

• X + Y

• V - X

• Z - W

• (W - Z ) + V

• W + Y - X

Find Y - W + Z

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• Does Not Exist

Find Y - (W + Z)

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• Does Not Exist

Find V + X

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• Does Not Exist

Calculator Allowed

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What do w, x, y and z equal in this matrix subtraction?

• w = 13, x = 4, y = 7, z = 23

• w = 13, x = -4, y = 11, z = 23

• w = 13, x = 4, y = 11, z = 23

• w = 13, x = 4, y = 11, z = 17

• -5

• 5

• 0

• 2

Find Z - W

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• Does Not Exist

What is the value of the variable in the equation?

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Perform the indicated operation

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• not possible