Answer
$x/4 +5/4 =y$
Work Step by Step
In order to find the inverse of a function, we first switch f(x) with y to obtain:
y=4x-5
Because it is an inverse function, that means that we switch x and y and then put the equation in terms of y:
$x=4y-5 \\\\ x+5=4y \\\\ x/4 +5/4 =y$
