Question

How do you find the inverse of `f(x)=9 x-4` and is it a function?

Answer 1

`g(x) = (x+4)/9`

Explanation:

The inverse of `f(x)=9 x-4` is a function `g(x)` such that

`f(g(x))=(f@g)(x) = x`

but

`f(g(x)) = 9 g(x)-4 = x` then

`g(x) = (x+4)/9`