ax + by + c = 0

37. ա) A (1;-1) և B(-3;2)

a — b + c = 0

-3a — 2b + c = 0
3a + 4b + c = 0

3a + 4y + 1 = 0

բ) C (2;5) և D(5;2)

2a + 5b + c = 0
5a + 2b + c = 0

4cx + 15cy + c = 0
4cx + 15cy + 1 = 0

4a + 10b + 2c — 25a + 10b + c

-21a — 3c = 0

-21a = 3c

a = 1/7

1/7a + 1 = 0