Linear Equations: Find the slope and the equation for a graph in the form y=mx+b when you are given two points on a graph.

Directions: Enter the points in the form x,y with no spaces, for example, 3,4 or -2.3,5.72
The large text window will show the calculation steps for finding the slope(m) from the two points and then will substitute the x,y coordinates to find the value of the y-intercept, b
(Repeating decimals, etc. are truncated in the sample problems to make the values easier to read)

Find the equation from two points on a grid:
Enter Point 1 (x 1 ,y 1 )   Enter Point 2 (x 2 ,y 2 )

slope (m) =

The equation is:  
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©Jeff LeMieux, revised 12/2014