
In this video, Salman Khan of Khan Academy shows you how to find the domain of a function.
Khan Academy

In this video, Salman Khan of Khan Academy explains functions. Part 4 of 4.
Khan Academy

In this video, Salman Khan of Khan Academy explains functions. Part 3 of 4.
Khan Academy

Excellent site showing examples of algebra, trig, calculus, differential equations, and linear algebra.
Paul's Online Math Notes

Gives a detailed description of different types of symmetry of a function using equations and graphs. Shows the student also through another link how to determine if a function is odd or even.
The Math Page

An online graphing calculator for students who do not have a handheld one.
algebra.help

Review your math as you progress from one marking period to the next.
Edhelper.com

How to solve quadratic equations using the completing the square method.
SOS Math

Standard form of a parabola and vertex equations
Standard form of a parabola
