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 WebGraphing.com Forum »  List all forums »  Forum: Algebra, Pre-Algebra, and Basic Math Homework Help »  Thread: [:-/] How do I graph 2 equations?

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dsteph02

Joined: Dec 15, 2006
Posts: 1
Status: Offline

 How do I graph 2 equations? Reply to this Post Reply with Quote

How do I graph 2 equations to find the break even point? And I need help understanding what this means "In the equations (C=800+3.20N and R=8.50N) do the y-intercept and coefficient of N give you?"
 [Dec 16, 2006 5:44:57 PM] [Link]
pskinner

Joined: Apr 2, 2005
Posts: 797
Status: Offline
 Re: How do I graph 2 equations? Reply to this Post Reply with Quote

Question: "How do I graph 2 equations to find the break even point?"

Answer: You can rewrite the equations, substituting x and y for the variables you might have (so if c=800+3.20N, replace c with y and N with x: y=800+3.20x; and if R=8.50N, replace R with y and N with x: y=8.50x). Then you can use the "Basic Multiple Equations & Systems Plotting Calculator", entering each equation as above separated by commas. Where they intersect will be the so-called break even point.

In your second question, there must be some typographical error because I can't decipher what it means.
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Principal Skinner
 [Dec 16, 2006 7:27:39 PM] [Link]
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