tentukan persamaan garis lurus melalui 2 titik a (3,4) b (6,5)

Bab Persamaan Garis
Matematika SMP Kelas VIII

(y - y1) / (y2 - y1) = (x - x1) / (x2 - x1)
(y - 4) / (5 - 4) = (x - 3) / (6 - 3)
(y - 4) / 1 = (x - 3) / 3
3 (y - 4) = x - 3
3y - 12 = x - 3
3y = x - 3 + 12
y = (1/3) . x + (9/3)
y = (1/3) . x + 3