Multiply by a Scalar

What do m, n, p and q equal in this scalar matrix multiplication?

• m=8, n=9, p=-4, q=4 

• m=15, n = -45, p=20, q=-5

• m=20, n=-5, p=15, q=-45

• m=-5, n=20, p=-45, q=15

How would a scalar multiplication be carried out for a matrix?

• Add the Scalar to every element in the matrix

• Dot product the rows of one matrix with the columns of the other matrix

• Multiply every element with the scalar to create a new matrix

• subtract the elements in the first matrix from the elements of the second matrix

• A
• B
• C
• D

• A
• B
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• D

• A

• B

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• E

Perform scalar multiplication on the matrix

• A

• B

• C

• D

If z = <-3, -3>, what is -4z?

• <12, 12>

• <12, -3>

• <-12, -12>

• <-12, 12>

Perform the scalar multiplication.

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• A

• B

• C

• D

If u = <-2, 0>, find 3u.

• <-6, 3>

• <-6, 0>

• <6, 0>

• <6, 3>