Question

Tentukan persamaan garis melalui titik (5,2)dan(3,-6)!

Answer 1

(y - y1) / (y2 - y1) = (x - x1) / (x2 - x1)

(y - 2) / (-6 - 2) = (x - 5) / (3 - 5)

(y - 2) / -8 = (x - 5) / -2

(y - 2) / 4 = (x - 5) / 1

y - 2 = 4 . (x - 5)

y = 4x - 20 + 2

y = 4x - 18