Choose the equations below that are perpendicular. 1. y = 7x+5
1
II. y +4 =-* (x + 7)
III. y = -7x-7
O None of the lines shown are perpendicular to each other.
O I and III are perpendicular because their slopes are opposites.
O II and III are perpendicular because their slopes are reciprocals.
O I and II are perpendicular because their slopes are opposite reciprocals.