Question

On the way to her babysitting job, Mary rode her bike for the first mile. She stopped at a traffic light and waited a few minutes for the traffic light to turn green. She then walked her bike across the street and up a short steep hill. Finally, she rode the bike at a constant speed for one more mile. If Mary created a graph of her time and distance, which statement describes the part of her graph that would show no change in distance?

Answer 1

Mary stopped and waited for the traffic light to turn green.

Explanation:

Thank you for the original answer (btw it was prefectly right) but it just took me a minute to understand the answer so this is just the answer and for quick needs.

Answer 2

Since Mary drew distance vs time graph, let's check all legs of her journey and see in which one the time passes but distance is static.

• Leg 1: Rode bike for first mile: Definitely distance changes with time.
• Leg 2: Stopped at traffic light: Here, time passes but she doesn't move and thus distance covered is same for that time.
• Leg 3: Walked bike across street: Here she covered short distance with respect to time.
• Leg 4: Rode bike one more mile at constant speed: Definitely here distance changes with time.

As can be seen from the 4 legs discussed above, Leg #2 is when Mary's distance doesn't change.

ANSWER: "She stopped at a traffic light and waited a few minutes for the traffic light to turn green"