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The line \(l\)(has a little one at the bottom), passes through the points (3, -3) and (-5, 2). The 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.

 Jan 27, 2024
 #1
avatar+129895 
+3

Slope of line

 

[ 2 - -3 ]   / [ -5 -3 ]  =   5 / -8  =  -5/8

 

Equation of line  using (3 , -3)

 

y =(-5/8) ( x -3) - 3                multiply through by 8

 

8y  = -5 ( x -3) - 24

 

8y  = -5x + 15 - 24

 

5x + 8y  =  -9

 

A + B + C   =

 

5 + 8  + (-9)   =

 

4

 

cool cool cool

 Jan 27, 2024
 #3
avatar
+2

Thank you! also, 3 am? how do u stay up that late :_)

 Jan 27, 2024

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