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--Jon Dreyer

Graphing Inverses

Cell phone keypad

12 ABC3 DEF
4 GHI5 JKL6 MNO
7 PQRS8 TUV9 WXYZ
*0#
Computerish code
Symbol0123456789ABCDEFGHI
Code0123456789101112131415161718
SymbolJKLMNOPQRSTUVWXYZ.-
Code19202122232425262728293031323334353637

Function/inverse graph: Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and active in your browser (Click here to install Java now)

Jon Dreyer