Question

What is the inverse of f(x)=3x+6 ?

Answer 1

`\boxed{\sf \ \ f^(-1)(x)=(x-6)/(3) \ \ }`

Explanation:

hello,

we can write

`fof^(-1)(x)=x \ and \ fof^(-1)(x)=f(f^(-1)(x))=3f^(-1)(x)+6 \ so\\3f^(-1)(x)+6=x \ \ subtract \ 6\\<=>3f^(-1)(x)=x-6 \ \ divide \ \ by \ \ 3\\<=> f^(-1)(x)=(x-6)/(3)`

hope this helps