Chapter 9 (rational functions) is one of the more difficult in the course, and just in case you lose them, here are the notes for the entire chapter (same notes handed out in class):
Prentice Hall Math (phschool.com) - homework help, lesson quizzes, and more (this is where you can put in those "web codes" from the textbook for help)
Ask Dr. Math - why is math important in real life? You wouldn't be the first person that's asked...
Graph Sketcher - an interactive graphing tool. Way nice.