Gradienbgaris yg melalui garis 2,-5 dan-3,6adalah

m=y2-y1/x2-x1
=6--5/-3-2
=6+5/-5
=11/-5

(2,-5) dan (-3,6)

(x - 2) / -3 - 2 = (y - (-5)) / 6 - (-5)
(x - 2) / -5 = (y + 5) / 11
11 (x - 2) = -5 (y + 5)
11x - 22 = -5y - 25
-5y = 11x - 22 + 25
-5y = 11x + 3
y = -11/5 x - 3/5

gradien garisnya = -11/5 = -2,5