The time is displayed along the x-axis of the provided graph. Between the  and the  period of the race, the driver is going  at each time point. We can see from the straight line between those two points that the race car driver's speed doesn't change; thus, the race car driver is driving at a consistent speed. 

The time is displayed along the x-axis of the provided graph. During the last  of the race, the driver goes from , displayed on the y-axis of the graph, to . We can see the line between those two points is decreasing in a negative direction, or getting slower; thus, the race car driver is decreasing his speed. 

The time is displayed along the x-axis of the provided graph. During the first  of the race, the driver goes from , displayed on the y-axis of the graph, to . We can see the line between those two points is increasing in a positive direction, or getting faster; thus, the race car driver is increasing his speed. 

When the time is at , displayed along the x-axis, we see that the speed, displayed along the y-axis is also . If a car has a speed of , the car is not moving. And if the time is at , the race has not started; thus, the race car driver is waiting to begin the race. 

The time is displayed along the x-axis of the provided graph. During the first  of the race, the driver goes from , displayed on the y-axis of the graph, to . We can see the line between those two points is increasing in a positive direction, or getting faster; thus, the race car driver is increasing his speed. 

The time is displayed along the x-axis of the provided graph. Between the  and the  period of the race, the driver is going  at each time point. We can see from the straight line between those two points that the race car driver's speed doesn't change; thus, the race car driver is driving at a consistent speed.

The time is displayed along the x-axis of the provided graph. During the last  of the race, the driver goes from , displayed on the y-axis of the graph, to . We can see the line between those two points is decreasing in a negative direction, or getting slower; thus, the race car driver is decreasing his speed. 

When the time is at , displayed along the x-axis, we see that the speed, displayed along the y-axis is also . If a car has a speed of , the car is not moving. And if the time is at , the race has not started; thus, the race car driver is waiting to begin the race. 

The time is displayed along the x-axis of the provided graph. During the first  of the race, the driver goes from , displayed on the y-axis of the graph, to . We can see the line between those two points is increasing in a positive direction, or getting faster; thus, the race car driver is increasing his speed. 

Between the  and  part of the race, the race car driver decreases his speed from  to . If we look pasted this point on the graph, we see that he speeds back up and continue with the race, so the race didn't not end. He also didn't stop, because his speed never hit ; thus, he must have had to slow down for some reason, but then resumed the race.