We present two function graphers. One graphs two funtions at a time and traces them; the other graphs three functions at a time.
Click the screen shot below to open the first grapher in a new window:
Click the screen shot below to open the second grapher in a new window:
Note: The complete source code for both graphers is available in the article "Flash Tools for Developers (AS3): Graphing Curves on the Plane" that you can find at Custom Classes for Mathematics section of Flash and Math.