Which pair of equations represents parallel lines? y=2x+7
y=2x-7

y=2x-7
y=-1/2-7

y=2x+7
y=x+7

y=7
x=7

Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?