tentukan gradien dari (2,-3)dan (-2,5)

m = (y2 - y1)/(x2 - x1)
m = (5 - (-3))/(-2 - 2)
= 8 / (-4)
= 2

melalui titik (2, -3) dan (-2, 5)

x₁ = 2
y₁ = -3
x₂ = -2
y₂ = 5

m = (y₂ - y₁) / (x₂ - x₁)
= (5 - (-3)) / (-2 - 2)
= 8 / (-4)
= -2