Answer:
The dog stopped for 4 seconds.
Explanation:
In the graph you can see in the x axis the time given in seconds, and in the y axis, the position given in meters.
For the interval between 0 and 4 seconds you can see that the line that represents the position has a change.
For 0s the dog is in the house, so the position is 0m
For 1 second, the dog has run 1 m.
For 2 seconds, the dog has run 2,5m.
For 3 seconds, the dog has run 3,5m.
And when has passed 3 seconds the dog has run 5 meters.
Between 4 and 8 seconds the line is horizontal and represents an unique value in the position axis, so it means that the position of the dog is the same and he is grabbing his bone.
Between 8 and 10.5 seconds the graph shows a change in position again, because the dog is returning to the house.
