Multiplying Matrices

Perform scalar multiplication on the matrix

• A

• B

• C

• D

You can multiply a 2X3 matrix by which matrix?

• 2X2

• 2X12

• 3X12

• 2X3

• A

• B

• C

• D

If Z = [[-2, 3], [-4, 5]] and w = -2, what is the result of wZ?

• [[4, -6], [8, -10]]

• [[-4, 6], [-8, 10]]

• [[2, -3], [4, -5]]

• [[-2, 3], [-4, 5]]

Row 1 : -9, 6
Row 2 : 15, -12 Row 1 : -15, 12
Row 2 : 9, -6 Row 1 : 6, -9
Row 2 : -12, 15 Row 1 : -6, 9
Row 2 : 12, -15

• Row 1 : -9, 6
  Row 2 : 15, -12

• Row 1 : -15, 12
  Row 2 : 9, -6

• Row 1 : 6, -9
  Row 2 : -12, 15

• Row 1 : -6, 9
  Row 2 : 12, -15

Perform scalar multiplication on the matrix

• A

• B

• C

• D

3A=?

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• undefined/not possible

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Use the given matrices to answer the following question;

Calculate 2A

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• Not Possible

AFTER multiplying by the scalar, what will the first row of the matrix be? Put one number in each box in the correct order.