The following group is a function for interpolating and a program for making the function accessible with a user friendly interface. I liked the Interpolation editor on the ti-85, so I tried to make it as close to that as I could. One improvement of this program is that the final x and y values are stored in the variables named x and y. This is done so that they can be accessed from the home screen for future calculations. Please send questions or comments to : Clif Burnes gt0370b@prism.gatech.edu