The following self assessment displays one of eleven problem types, with randomly generated coefficients.
This worksheet uses javascript to open a new window where a video tutorial from YouTube will play. If you want to see that part in action, check out the following site:
[url=http://math.utsa.edu/~vud447/?Teaching:MATH_1414:Prerequisites:Linear_Equations] math.utsa.edu/~vud447[/url]