tolong kejain dong nomer 4 sama 5

4) a) y - b = m(x - a)
y - 4 = (-1/3)(x - 0)
x + 3y - 12 = 0

b) y - (-2) = -4(x - 1)
y + 2 = - 4x + 4
4x + y - 2 = 0

5) 2x - 5y = 8
- 5y = - 2x + 8
y = (2/5)x - 8/5
m = 2/5
Pers garisnya:
y - 2 = (2/5)(x - 7)
5y - 10 = 2x - 14
2x - 5y - 4 = 0