Let f(x) = 6x + 1 and g(x) = -2x - 5. Compute (g*f)(x)?

1 Answer
Mar 15, 2018

gf(x)=-12x-7

Explanation:

With composite functions, we work from the inside out. So for gf(x), we do f(x), then we "g" it.

#f(x)=6x+1

Sub this into g(x):

gf(x)=-2(6x+1)-5

=-12x-2-5

=-12x-7