Question

Officer Franklin is on traffic duty his motorcycle is parked alongside the freeway and he’s using his radar gun to check the speed of cars.

The speed limit on the stretch of this freeway is 75 mph a sports car races by Officer Franklin causing him to lose his grip on the radar gun when he picks it back up he clocks the car at 93 mph as it passes a bridge 1/2 of a mile ahead of him. Use your knowledge of writing equations to help determine the drivers location

Answer 1

A:93
B: slope

the slope is the rate of change of the line. this line models the distance between cop and the driver. note that the cop is standing still while the sports car is moving away at 93 mph

if the x-axis is in hours and the y-axis is in miles, then slope = rise/run = km/h, which is kilometers per hour. the slope is the rate of change of distance for the distance vs time graph

therefore the slope is 93 mph