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A line passes through the points (-3,-5) and (6,1). This line is the graph of the equation Ax + By = C, where A, B, and C are integers with greatest common divisor 1, and A is positive. Find A + B+ C.

 Feb 21, 2020
 #1
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The slope of the line is (6 - (-3))/(1 - (-5)) = 9/6 = 3/2, so by point slope form, the equation of the lins is (y + 5) = 3/2(x + 3).  Then 2y + 10 = 3x + 9, so 3x - 2y = 1.  A + B + C = 3 + (-2) + 1 = 2.

 Feb 21, 2020
 #3
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sorry, but thats not right...

Guest Feb 21, 2020
 #2
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sorry, but thats not right...

 Feb 21, 2020
 #4
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A line passes through the points (-3,-5) and (6,1). This line is the graph of the equation Ax + By = C, where A, B, and C are integers with greatest common divisor 1, and A is positive. Find A + B+ C.

laugh

 Feb 21, 2020
edited by Omi67  Feb 21, 2020

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