Three runners run along a 1.5 mile trail one saturday morning. the graph shows the runners’ locations starting at 9: 00 a. m. use the graph to answer the questions. who is at the trail start at 9: 00 a. m.? who runs fastest? when do andy and berta cross paths? who is closest to the 1.5 mile mark after 6 minutes?

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."

answer: hey there,

the answer you are looking for is a..

hope this you!

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