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View Full Version : graph pairs of points, draw line, find slope-intercept eqn



trocks94
10-27-2008, 07:57 PM
do you know how to do this?

graph the points and draw a line through them. write an equation in slope-intercept form of the line that passes through the points.

1.(-1,-2)(2,6)
2.(-1,-2)(3,-2)
3.(2,-3)(-3,7)
4.(6,-4)(-1,2)
5.(1,1)(7,4)
6.(5,-6)(5,-3)
7.(-5,2)(6,1)
8.(-1,10)(12,-4)

royhaas
10-27-2008, 08:01 PM
Start by calculating the slopes. Then use one of the points to solve for the y-intercept.

trocks94
10-27-2008, 08:10 PM
i tried that but the answer still came out wrong!

Subhotosh Khan
10-27-2008, 09:00 PM
i tried that but the answer still came out wrong!

If you show us your work - may be we would know where to begin to help you.

Denis
10-27-2008, 10:17 PM
Go learn trocks: http://www.analyzemath.com/line/Tutorials.html