## anonymous 4 years ago Find an expression for f^-1 (x) (inverse) y = (2x + 7) / (x + 2)

1. TuringTest

I'm thinking you didn't see how to factor out the x$y=\frac{2x+7}{x+2}$$yx+2y=2x+7$$yx-2x=7-2y$$x(y-2)=7-2y$pretty sure you got it now...

2. anonymous

You were right :p I couldn't factor it out... I feel so stupid! Thanks! :)

3. TuringTest

It happens to us all. Now you know though, so next time no excuse! :P