Question

What is the inverse of the function ? *
f(x)=x+4

Answer 1

`f^-1(x)=x-4`

Step-by-step explanation:

`f(x)=x+4\\y=x+4\\`

We first replace f(x) with y.

We then switch x and y.

`x=y+4`

We then find y in terms of x in our new equation.

`y=x-4`

We then replace y with
`f^-1(x)`.

`f^-1(x)=x-4`