persamaan suatu garis yang melalui titik ( -6, -4 ) dan titik ( 8, -5 ) adalah..

-6y - 4x = 24
8y - 5x = -40

Garis titik (-6,-4) dan (8,-5)

m = (y2-y1) / (x2-x1)
= (-5-(-4)) / (8-(-6))
= -1 / 14

Y = mx + c
Y = -1/14x + c
-4 = -1/14 . (-6) + c
-4 = 6/14 + c
-56/14 - 6/14 = c
- 62/14 = c

Y = -1/14x - 62/14
(dikali 14)
14y = -x -62
14y + x = -62