Question

Elena and Lin are training for a race. Elena runs her mile a constant speed of 7.5 miles per hour.

Lin’s times are recorded every minute:

time (minutes) 1 2 3 4 5 6 7 8 9
distance (miles) 0.11 0.21 0.32 0.41 0.53 0.62 0.73 0.85 1
1. Who finished their mile first?
2. This is a graph of Lin’s progress. Draw a graph to represent Elena’s mile on the same axes.
3. For these models, is distance a function of time? Is time a function of distance? Explain how you know.
PLEASE HELP GIVING 200 POINTS NEED DONE ASAP

Answer 1

Elena won the race.

Explanation:

If you calculate it, Lin runs a mile every 9 minutes.

9 times 7.5= 67.5 which is 1 hour, 7 minutes and 30 seconds. While it took only an hour for Elena to run 7.5 miles.

Which means Elena's speed was faster and got her to the finish line first.