Question below

Question

Let
f(x) = 2x + 1
and
g(x) = x − 8.
Find the function. (Simplify answer completely.)
g − f

(g − f)(x)=

 

Find domain in interval notation

Answer 1

(f-g)(x) = f(x) - g(x) = 2x+1 - (x-8).

 

You should be able to simplify this; it will be a linear function and its domain is all reals, (-infinity,infinity).