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October 30th, 2011, 12:17 PM   #1
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Straight line graphs

Hi, was wondering if anyone can help please?
The point A(-6,4) and the point B lie on line L.
Find an equation for L in the form ax+by+c=0 where a, b and c are integers?
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October 30th, 2011, 12:34 PM   #2
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Re: Straight line graphs

Sorry supposed to be point B is (8,-3)
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October 30th, 2011, 01:47 PM   #3
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Re: Straight line graphs

First, we may compute the slope m of the line:



Next, using the point-slope form for a line, we find:







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November 5th, 2011, 12:00 PM   #4
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Re: Straight line graphs

Thank you
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