03-13-2011, 09:01 AM
(03-13-2011, 08:57 AM)Quinlan Wrote: Seems like pretty basic Algebra 1 material; you should get the hang of it in no time. These are "linear equations".
I would STRONGLY recommend first checking out the video made by Sal Khan:
http://www.khanacademy.org/video/algebra...st=Algebra
Otherwise, try Purple Math:
http://www.purplemath.com/modules/strtlneq.htm
or Wikipedia:
http://en.wikipedia.org/wiki/Linear_equation
But just as a basic rundown: These equations are in standard form - "Ax+By=C". You'll want to get each equation into Slope-Intercept form - "y=mx+b" with "m" as the slope and "b" as the y-intercept. Then you can plot each line by using the idea of "rise over run", or the change in Y coordinates over the change in X coordinates (a slope of 1 would be a diagonal going from the bottom left of a graph to the top right, and a slope of -1 would be the opposite).
Hopefully this helps!
It does help thanks! I knew it had something to do with Y=mx+c but I guess my brain was tied in a knot.