This is another one of those problems that I kinda get the idea of how to do it but then just can't think of anything else. So, to the problem.

Function

Line

From here we know that since

Then I made

To get the value of x.

Now I go back to the given line and plug in:

My point is

I did most of it as I was writing this, I think my light bulb turned on.

Did I do it right or is there another way of doing this?