1. Graph A matches description 2 because the line is straight and travelling upwards at a constant speed (positive, constant slope).
2. Graph B matches description 4 because the line is flipped, travelling the opposite direction at a constant speed (represents the car turning around and driving the other way compared to graph A)
3. Graph C matches description 1 because the line is horizontal and is not moving (when the line is horizontal and remains constant, the object is not accelerating, it is stationary)
4. Graph D matches description 3 because of the way the line moves on the graph- accelerates and then starts to flow more horizontally, not accelerating as quickly anymore and remaining at a lower speed.