tolong bantu saya no 17-18

17. Y=mX + 0
Y = -3/5 X + 0
3/5 X + Y = 0 ==> x 5
3X + 5Y = 0 (c)

18. Y-Y1 = m(X-X1)
Y - 3 = -3 (X-(-2))
Y - 3 = -3X - 6
Y + 3X - 3 + 6 = 0
Y + 3X + 3 = 0 (c)