Question

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

Answer 1

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

Answer 2

it would be y =4x-1
then inverse is x=4y-1

Answer 3

let y=4x-1
make x subject of formula
(y+1)/4=x
replace the y by x
therefore f inverse of x=(x+1)/4