Persamaan garis lurus yg melalui titik (-2, -4) dan titik (-4, 3) adalah... A. 3y +2x = 1 B. 3y -2x = 1 C. -3y + 2x = 1 D. 3y -2x = -1

Bab Persamaan Garis
Matematika SMP Kelas VIII

(y - y1) / (y2 - y1) = (x - x1) / (x2 - x1)
(y - (-4)) / (3 - (-4)) = (x - (-2)) / (-4 - (-2))
(y + 4) / 7 = (x + 2) / (-2)
(-2) . (y + 4) = 7 (x + 2)
-2y - 8 = 7x + 14
7x + 2y + 14 + 8 = 0
7x + 2y + 22 = 0