Question 249112
To find the inverse of a function involving x and y, just replace the x's with y's, and the y's with x's, and solve for y once again:<br>

y=3x-5 given<br>

x=3y-5 replace the variables with one another<br>

0=3y-5-x subtract x from both sides<br>

-3y=-x-5 subtract 3y from both sides<br>

y=(-x-5)/(-3) divide both sides by -3<br>

y=(x+5)/3 simplify and final answer<br>

If the original function had been f(x)=3x-5, you just need to replace f(x) with y before starting!  :)<br>