Well, your answer is correct. You've made a mistake in your proof:
You factor by but keep the on the numerator (should be ). I strongly recommedn writing the original answer as
Keeping unecessary minus signs is a recipe for disaster
I'm trying to take the inverse of the function
I think I've got it following this procedure
[tex]y = \frac{-3-4x}{x-2}[tex]
I worked that a few times and am pretty confident in my answer. The proof is in plugging that back into the original equation and seeing if I get x, and this is where I'm fumbling about
which, unless I'm blind, does not equal x. I hope the above isn't too confusing.
Assuming my initial answer is correct, what am I doing wrong when I'm trying to verify it?