The Families Of Functions applet allows a user to investigate parameterized families of graphs by varying the value of one or more parameters. Sliders that control the parameters are shown at the bottom of the applet. The built-in examples illustrate graphing transformations on the sine and quadratic functions and also look at log and exponential functions. To load an example, select it from the pop-up menu at the top of the applet and click the "Load Example" button. The user may enter functions of this form in the "f(x)=" input box.