The equation d=rt is used to calculate distance, rate, or time, where dd is the distance (in meters), r is the rate (in meters per minute), and tt is the time (in minutes). consider the statements below that describe the walking rates for three people. graph the equation that represents the rate of the fastest person. tomas walks 1200 meters in 8 minutes. becky walks for 10 minutes and goes 1400 meters. derrick walks at a rate of 145 meters per minute.