Tentukan gradien garis yang melalui dua titik (-13, -11) dan (17, -9)

y1-y2)/(x1-x2
= -9-(-11))/( 17-(-13)
= -9+11)/(17+13
= 2/30
= 1/15

m = (y2 - y1)/(x2 - x1)
m = (-9 - (-11))/(17 - (-13))
m = (-9 + 11)/(17 + 13)
m = 2/30
m = 1/15