Here are the equations of five straight lines.
Line A: y=3x−2y = 3x - 2y=3x−2 Line B: y+3x=4y + 3x = 4y+3x=4 Line C: 2y=x+62y = x + 62y=x+6 Line D: 3y+x=93y + x = 93y+x=9 Line E: y=2x+1y = 2x + 1y=2x+1
Two of these lines are perpendicular. Write down the two perpendicular lines.