carilah persamaan garis yg melalui 1.(-9,5) & (-6,-7) 2.(-6,-1) & (3,-5) 3. (-7,-4) & (-1,-3) 4.(-2,-9) & (5,-6) tolong di jawab ya kak besok mau dikumpulin

persamaan garis yang melalui 2 titik
(y - y1) / (y2 - y1) = (x - x1) / (x2 - x1)

1) (-9, 5) sebagai (x1, y1) dan (-6, -7) sebagai (x2, y2)
(y - 5) / (-7 - 5) = (x + 9) / (-6 + 9)
(y - 5) / (-12) = (x + 9) / (3)
dikali silang
3 (y - 5) = -12 (x + 9)
3y - 15 = -12x - 108
3y + 12x = -108 + 15
3y + 2x = -93
3y + 2x + 93 = 0

2)(-6, -1) dan (3, -5)
(y + 1) / (-5 + 1) = (x + 6) / (3 + 6)
(y + 1) / (-4) = (x + 6) / (9)
9 (y + 1) = (-4) (x + 6)
9y + 9 = -4x - 24
9y + 4x = -24 - 9
9y + 4x = -33
9y + 4x + 33 = 0

3) (-7 , -4) dan (-1, -3)
(y + 4) / (-3 + 4) = (x + 7) / (-1 + 7)
(y + 4) / (1) = (x + 7) / (6)
6 (y + 4) = 1 (x + 7)
6y + 24 = x + 7
x - 6y = 24 - 7
x - 6y = 17
x - 6y - 17 = 0

4) (-2, -9) dan (5, -6)
(y + 9) / (-6 + 9) = (x + 2) / (5 + 2)
(y + 9) / (3) = (x + 2) / 7
7 (y + 9) = 3 (x + 2)
7y + 63 = 3x + 6
3x - 7y = 63 - 6
3x - 7y = 57
3x - 7y - 57 = 0