Answer:
The first graph represents Tina's bike ride.
Explanation:
The first graph represents Tina's bike ride.
Here, first increases the speed at a certain constant rate and then after some time speed decreases steadily to zero. Then the speed remains zero for some time at the stop.
Then after stopping for a while, the speed again increases steadily, but at a slower pace than when she first left her house. Then the speed maintains a constant certain value for some while then it again starts to slow at another steady rate and comes to stop i.e. zero speed at another stop.
Therefore, graph 1 represents the motion of Tina. (Answer)