Question

Find the inverse of the function f(x) = 4x-1

Answer 1

The choice one is the correct x+1/4

Answer 2

first option

Explanation:

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

y = 4x - 1 ( add 1 to both sides )

y + 1 = 4x ( divide both sides by 4 )

`(y+1)/(4)` = x

Change y back into terms of x with x =
`f^(-1)`(x)

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