persamaan garis yang melalui dua titik K (-1,-6) dan L (-4,-3) adalah... A. x - y = -7 B. x - y = -5 C. x + y = -7 D. x + y = -5 pake cara ya.. tolong bantu

(x-x1)/(x2-x1) = (y-y1)/(y2-y1)
(x + 1)/(-4 + 1) = (y + 6)/(-3 + 6)
(x + 1)/-3 = (y + 6)/3
3(x + 1) = -3(y + 6)
3x + 3 = -3y - 18
3x + 3y = -18 - 3 = -21
x + y = -7 (C)

(y - y₁) / (y₂ - y₁) = (x - x₁) / (x₂ - x₁)
(y + 6) / (-3 + 6) = (x + 1) / (-4 + 1)
(y + 6) / 3 = (x + 1) / -3
-3(y + 6) = 3(x + 1)
-3y - 18 = 3x + 3
3x + 3y = 3 + 18

3x + 3y = 21 ✔