tentukan gradien garis mekalui dua titik berikut 4,5 dan-5,3

y - y₁ / y₂ - y₁ = x - x₁ / x₂ - x₁
y - 5 / (3 - 5) = x - 4 / (-5 - 4)
y - 5 / -2 = x - 4 / -9
-9(y - 5) = -2(x - 4)
-9y + 45 = -2x + 8
2x - 9y + 45 - 8 = 0

2x - 9y + 37 = 0
m = -a/b
m = -2/-9
m = 2/9 ✔