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x2 - x1 = -5y -2x = 29
y - y1 = x - x1
y2 - y1 x2 - x1
y - (-5) = x - (-2)
-7 - (-5) 3 - (-2)
y + 5 = x + 2
-2 5
*pekalian silang
5 ( y+5 ) = -2 ( x+2)
5y +25 = -2x - 4
5y + 2x = -29
atau
29 = -2x -5y