To find the inverse of any function, switch the x's with y's and vice versa.
The current equation given is
Switch the with
and switch the
with
After doing so, we'll have the following equation:
Now, let's move the variables around so that y is isolated on the left side again.
Subtract both sides by 4y
Subtract both sides by x
Divide both sides by -4
That is the answer.
Have an awesome day!
(ﾉ◕ヮ◕)ﾉ*:･ﾟ✧