Adding, Subtracting, and Scalar Multiplication of Matrices

Given these matrices find D - A

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• NA

Find B-A

• -3     1
  7     -1

• 1     0
  1     -4

• -4       0
  6     -1

• not possible because rows do not match columns

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

Find A+B

• 8     10
  8      1 

• 12     25
  7     1

• 10     30
  0     1

• can't add two together because the rows dont match columns

Calculate

• A

• B

• C

• D

What is the value of the variable in the equation?

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Perform the given operations

• A

• B

• C

• D

Determine if you are finding the sum of an identity or opposite matrix then solve.

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The element in row 2 column 1 of matrix ED is:

• -1

• 1

• 2

• 3

What is C+B?

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• Undefined