Question

Pre Calc
first pic is the question. Second pic is the possible answers

Answer 1

Choice B.

Explanation:

The first step is to apply the scalar -3 to Matrix B. This gives you
`\left[\begin{array}{ccc}3\\-9\\6\end{array}\right]`

Next, do A + B. This gives you
`\left[\begin{array}{ccc}4\\-12\\8\end{array}\right]`

Answer 2

4

-12

8

Explanation:

1 -1

-3 - 3* 3 =

2 -2

multiplication by a scalar just multiplies each item in the matrix

1 -3

-3 - 9 =

2 -6

1 --3

-3-9 =

2--6

1+3

-3-9

2+6

4

-12

8