minta bantuannya kalian dong!!

Persamaan garis melalui 2 titik (x1, y1) dan (x2, y2)
(y2 - y1)/(x2 - x1) = (y - y1)/(x - x1)

1) (0,3) dan (6,0)
(0 - 3)/(6 - 0) = (y - 3)/(x - 0)
-3/6 = (y - 3)/x
-1/2 = (y - 3)/x
2(y - 3) = (-1)x
2y - 6 = -x
x + 2y = 6
x + 2y - 6 = 0

2) (5,6) dan (-2, 1)
(1 - 6)/(-2 - 5) = (y - 6)/(x - 5)
-5/-7 = (y - 6)/(x - 5)
5/7 = (y - 6)/(x - 5)
5(x - 5) = 7(y - 6)
5x - 25 = 7y - 42
5x - 7y = -17
5x - 7y + 17 = 0

3) (0,3) dan (2,7)
(7 - 3)/(2 - 0) = (y - 3)/(x - 0)
4/2 = (y - 3)/x
2/1 = (y - 3)/x
2x = y - 3
2x - y = -3
2x - y + 3 = 0