Question

What is the inverse of..

Answer 1

`f^(-1)`(x) =
`(x-2)/(8)`

Explanation:

let y = f(x) and rearrange making x the subject

y = 8x + 2

8x + 2 = y ( subtract 2 from both sides )

8x = y - 2 ( divide both sides by 8 )

x =
`(y-2)/(8)`

change y back into terms of x, hence

`f^(-1)` (x) =
`(x-2)/(8)`