Need help with function graphs

<p>Hi guys.
I've got my SAT Reasoning on Saturday and I need a crash course in functions and their graphs. I've tried Kaplan, Barron's, and the Collegeboard study guide and NONE of them cover functions well enough. The only questions I can't get on the SAT test are the functions and I'm panicking (for good reason =( ). So could anyone please point me to a site that teaches function (SAT level)?
Thanks.</p>

<p>Someone help!</p>

<p>function....?
what kind o_O</p>

<p>give me an example?</p>

<p>I think he needs to know where he can learn all about the functions related SAT problems,not a particular problem.</p>

<p>Uhm yea.. I need to know everything about functions. =(</p>