tolong pake caranya yah

y - y1 = m (x - x1)
y - (-4) = 1/3 (x - 6)
y + 4 = 1/3x - 2
- 1/3x + y + 4 + 2 = 0
- 1/3x + y + 6 = 0
semuanya dikali -3
x - 3y - 18 = 0 (d.)