Choose the equations below that are perpendicular. 1. y = 3x+5
II. y + 2 = - } (x + 3)
III. y = -3x - 3
O II and III are perpendicular because their slopes are reciprocals.
O None of the lines shown are perpendicular to each other.
O I and II are perpendicular because their slopes are opposite reciprocals.
O I and III are perpendicular because their slopes are opposites.