Tentukan persamaan garis yg melalui titik berikut: a. (2,3) dan (4,5) b. (3,4) dan (2,5) c. (4,3) dan (2,5)

5/4-3/2= 2/2=1
5/2-4/3= 1/5
5/2-3/4= 2/6=1/3
Kayaknya sih gitu deh jwbnnyaaa.. tpi maaf yak kalo salahh...

a) (y - y1) / (y2 - y1) = (x - X1) / (x2 - X1)
(y - 3) / (5 - 3) = (x - 2) / (4 - 2)
(y - 3) / 2 = (x - 2) / 2
2 (y - 3) = 2 (x - 2)
2y - 6 = 2x - 4
2y - 2x = 6 + 4
2y - 2x = 10

b) (y - 4) / (5 - 4) = (x - 3) / (2 - 3)
(y - 4) / 1 = (x - 3) / (-1)
(-1) (y - 4) = 1 (x - 3)
- y + 4 = x - 3
- y - x = - 3 - 7
- y - x = - 10

c) (y - 3) / (5 - 3) = (x - 4) / (2 - 4)
(y - 3) / 2 = (x - 4) / (-2)
- 2(y - 3) = 2 (x - 4)
- 2y + 6 = 2x - 8
- 2y - 2x = - 6 - 8
- 2y - 2x = - 14