In a distance-time graph, the gradient of the line is equal to the speed of the object. The greater the gradient (and the steeper the line) the faster the object is moving ...

The gradient of a distance-time graph represents speed. When displaying a journey, the vertical axis will often represent the distance from a particular place rather than the distance travelled.

Why do you always make a graph in physics lab? It's not just for fun, there is a reason. Here is an example.