Gradien garis yang melalui titik (-2,-6) dan (-4,-5) adalah

Misalkan (x1 , y1) = (-2 , -6) dan (x2 , y2) = (-4 , -5)
Maka gradien (m)
m = (y2 - y1) / (x2 - x1)
= (-5 - (-6)) / (-4 - (-2)
= (-5 + 6) / (-4 + 2)
= 1 / (-2)
= -(1/2)

m=y2-y1/x2-x1
=-5+6   /   -4+2
=1/-2
=- 1/2