I found videos which summarize the whole chapter 3. You guys may want to use them to help you study. I think watching the videos is better than reading the textbook because we can save our time. But, it depends on you guys. :)
Actually, I don't really like the voice of the guy who teaches on the videos because sometimes he doesn't really speak clearly
3.1 Reciprocal of Linear Functions
3.2 Proportionally and Rate of Change
3.3 Reciprocal of Quadratic Functions
3.4
3.5 Oblique Asymptotes and Special Cases
3.6
3.7
Or you guys can take a look to this website : Paul's Online Math (Rational Functions' Note)
Hope these things can help you!! :)