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Tool: Equations of a Straight Line
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Go to: http://www.cut-the-knot.org/.../StraightLine.shtml (opens a new window)
Description: An interactive Java applet that displays one or more straight lines in a user-definable Cartesian system of coordinates. For the selected straight line the applet displays a choice of equations: two points, point-slope, slope-intercept, two intercepts, etc. The applet is accompanied by some discussion of these equations at a fairly high level.
Technology Type: Java Applet 
Author: Alexander Bogomolny
Language: English 
Cost: Does not require payment for use

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Courses: Geometry Slope, Equations of a line
PreCalculus linear