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WebGraphing.com Forum » List all forums » Forum: Precalculus and Trigonometry Homework Help » Thread: Finding an equation... |
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Total posts in this thread: 2 |
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EternalSummer247
USA Joined: Jul 6, 2007 Posts: 36 Status: Offline |
I'm doing a chapter one test in Precalculus Demystified and one of the questions is... Find an equation of the line containing the point (-1, -5) and parallel to the line y=2x-4 Through the book up until this point, the book does not cover how to solve a problem that's written like this. I've tried working the problem in other ways, but I've come up with nothing because I don't have any x2 and y2 values. How do I solve this? Thanks |
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pskinner
Joined: Apr 2, 2005 Posts: 694 Status: Offline |
y=mx+b is the equation of a line with slope m and y intercept b. The slope of parallel lines is the same, so in your case m is 2. To find b, substitute your given values for x and y with m=2. ---------------------------------------- Principal Skinner |
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Re: Finding an equation...