Practice finding the equation of a line

In order to begin learning to use JSXGraph (which also requires that I learn javascript) I created an application in which a line is randomly generated and the user enters what she thinks the equation is. Her equation is then graphed for comparison with the original.

Particularly helpful to me in developing this were Dr. Carol Fisher’s Reference on JSXGraph Commands and the convert-to-math script  in use at interactive
mathematics. (The latter enables the user to enter the equation using standard calculator notation.) I also found the javascript tutorial at w3schools.com a very useful introduction to javascript.

The application uses MathJax to produce nice mathematical notation.