Slope-Intercept Solver submitted by: Jeff LeMieux, May 2003 This narrative describes how I use my javascript tool, cataloged in the Math Tools digital library, in the classroom. Course: Math 7 Topic: Functions; Finding the Slope of a Line Resource type: JavaScript Resource location: http://www2.whidbey.net/ohmsmath/webwork/javascript/xyxyplot.html Math Forum catalogue entry: http://mathforum.org/mathtools/tool.html?rc=tool&new_id=792 Story:  The slope-intercept form of linear equations marks the departure of 7th grade math into algebra. Students can generally work their way through programs which emphasize the constant rate of change (slope) and the idea of a y-intercept when the data doesn't always start at zero. They can plot a graph from a data table and write the equation. A new level of complexity occurs when they are asked to generate a graph from just the equation and then generate a graph from one point (ordered-pair) and the slope: The real challenge comes when the student is asked to generate an equation from two points on the graph. It is not the primary purpose of this script to just arrive at an equation, rather it is to show in sequence, the calculation set up and solution so the student can trace the procedure and compare it to what they have learned before. Where and how I used this: This script is used as a link on the lesson page for the student to use to complete problems of this type. The student is required to either copy or refer to the procedure while working on their assignment. This script would not be available during quizzes or testing. The two graphics on this page are the property of Jeff LeMieux and are available free for educational use. Most browsers allow you to right click on the image and save it to your machine. Send comments to Jeff LeMieux at tackweed@whidbey.net Jeff LeMieux May 2003 http://www2.whidbey.net/ohmsmath