persamaan garis yg melalui titik -4,7 dan10,-1

melalui titik (-4, 7) dan (10, -1)
x1 = -4
y1 = 7
x2 = 10
y2 = -1

(y - y1) / (y2 - y1) = (x - x1) / (x2 - x1)
(y - 7) / ((-1) - 7) = (x - (-4)) / (10 - (-4))
(y - 7) / (-8) = (x + 4) / 14
14(y - 7) = -8(x + 4)
---------------------------------------- kedua ruas dibagi 2
7(y - 7) = -4(x + 4)
7y - 49 = -4x - 16
4x + 7y = -16 + 49
4x + 7y = 33
4x + 7y - 33 = 0

Jawaban C