Natalie and Raul recently had a rectangular pool installed in their backyard. The pool pump operates at a constant rate to fill the pool, and also to drain it. Raul initially filled the pool at a constant rate of 150 gallons per hour. Suppose he then empties it at a constant rate of 150 gallons per hour. What is true about the graphs representing these two situations? A. The lines are parallel to one another.
B. The lines are perpendicular to one another. C. The lines intersect but are not perpendicular.​