Question

Find f (-9) if f (x) = -2x - 6

Answer 1

f(- 9) = 12

Explanation:

Substitute x = - 9 into f(x) , that is

f(- 9) = - 2(- 9) - 6 = 18 - 6 = 12

Answer 2

12

Explanation:

you just have to substitute -9 into -2x-6

-2(-9) - 6

18 - 6

=12

hope that helps