For extra help, try Khan Academy. You can type in any topic in the search box (top left corner of Khan Academy page) and find videos, lessons, and extra practice for that topic. It’s an awesome site, so check it out!
Lesson 2.3 & 2.4 Notes from class: Getting Information from the Graphs of a Function & Average Rate of Change of a Function
Math 1010 Lesson on story problems with systems of equations – page 8 is particularly helpful for problem #22 on the 5.1 Webassign.net assignment.
IMPORTANT: Add this problem to the final review: Graph the rational function
f(x) = (x^3 – 2x^2 – 3x)/(x^2 – 4)