Question

Clare is running around the track and her coach recorded her times at the end of laps 2, 4, 6, 8 and 10. Is Clare running at a constant pace and if so, what is the constant of proportionality (unit rate) Clare is running?

A.

Yes, Clare is running at 5 minutes per lap.


B.

No, Clare is not running at a constant rate because she gets slower as she runs more laps.


C.

Yes, Clare is running at a constant rate of 2.5 minutes per lap.


D.

No, Clare decided not to listen to her coach and decided to run faster each lap.

Answer 1

d

Explanation:

Answer 2

No, Clare is not running at a constant rate because she gets slower as she runs more laps. Option B

To determine if Clare is running at a constant pace, let's analyze her lap times.

If Clare is running at a constant pace, the time for each lap should remain consistent. Let's assume her lap times at the end of laps 2, 4, 6, 8, and 10 are as follows:

Lap 2: 10 minutes

Lap 4: 20 minutes

Lap 6: 30 minutes

Lap 8: 40 minutes

Lap 10: 50 minutes

From the recorded times, it's evident that Clare's lap times are increasing by 10 minutes with each subsequent lap.

Thus, Clare is not running at a constant pace.