Tool: Equation of a line in slope / intercept form  Math Open Reference 


Go to:  http://www.mathopenref.com/coordequation.html (opens a new window)  
Description:  An interactive applet and associated web page that demonstrate the equation of a line in coordinate geometry. The equation is in slope / intercept form (y=mx+b). The user can move two sliders that control a and b. The graph changes accordingly and equation for the line is continuously recalculated with every slider move. The grid, axis pointers and coordinates can be turned on and off. The equation display can be turned off to permit class exercises and then turned back on the verify the answers. The applet can be printed as it appears on the screen to make handouts. The web page has a full description of the concept of the equation of a line, a worked example and has links to other pages relating to coordinate geometry. Applet can be enlarged to full screen size for use with a classroom projector. After use in the classroom, student can access it again from any web browser at home or in the library with no login required. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com. 

Technology Type:  Flash  
Author:  John Page  
Language:  English  
Cost:  Does not require payment for use  
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Courses:  Geometry  Equations of a line  
Algebra  Slope Between Points, Finding Intercepts, Slope  Intercept Form, Linear Formulas  
