mohon bantuannya... itu buat besok... jangan ngasal ya... jawabnya...

a) y - y1 = m (x - X1)
y - 4 = - ⅓ (x - 0)
y = - ⅓ x + 4 (dikali 3)
3y + x = 12

b) y - y1 = m (x - X1)
y + 2 = - 4(x - 1)
y = - 4x + 4 - 2
y + 4x = 2

c) (y - y1) / (y2 - y1) = (x - X1) / (x2 - X1)
(y - 6) / (4 - 6) = (x - 1) / (7 - 1)
(y - 6) / - 2 = (x - 1) / 6
6 (y - 6) = - 2 (x - 1)
6y - 36 = - 2x + 2
6y + 2x = 2 - 36
6y + 2x = - 34

d) y = x - 6
m = 1
y - y1 = m (x - X1)
y + 1 = 1 (x + 2)
y = x + 2 - 1
y - x = 1

g) m = (y2 - y1) / (x2 - X1)
m = (-2 + 4) / (0 + 5)
m = 2 / 5
tegak lurus
m1 . m2 = - 1
²/5 . m2 = - 1
m2 = - 5/2
y - y1 = m (x - x1)
y - 1 = - 5/2 (x + 2)
y = - 5/2 x - 5 + 1
y + 5/2 x = - 4 (dikali 2)
2y + 5x = - 8