Question

What is the inverse of the function f(x) = 2x – 10?

Answer 1

`f^-1(x)=1/2x+5`

Explanation:

`f(x)=2x-10 rarr` Replace the `f(x)` with `y`

`y=2x-10 rarr` Switch the places of the x and the y

`x=2y-10 rarr` Solve for y

`x+10=2y`

`y=1/2x+5`

The inverse is `f^-1(x)=1/2x+5`