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This applet gives practice in estimating the slope and y-intercept
of the line through two points.
Being able to quickly estimate such slopes 'by eye' is a basic but important and useful skill for the study and application of calculus. The applet gives you a hint if you need it, and the option of using the slider to control the slope value lets you work by trial and error at first; but the goal should be to be able to just type in good approximate values on your first guess. |
[If your browser refuses to run this app in an iFrame then you might try to run it in a new "insecure" window] |