Question

Given

F(x)=3x+9

And

g(x) =1/3x-3

verify by composition that f(x) and g(x) are inverse functions.

Answer 1

Explanation:

use fog

3(1/3x-3)+9

=x

use gof

1/3(3x+9)-3

=x

we can see that both results give us x hence they are inverse