Keep in mind both the distance and time of the scenarios. The faster and more distance travelled = a higher gradient for the line. If he slows, the gradient decreases. If he stops, the line is flat but time still goes on.
Labael the bottom half of the chart by 1 2 3 4 5 6 7 8 9 and so on then put then start at zero an then put the dot on five each time but go up one big gape each time
