1.2 plot and interpret distance-time graphs

The vertical axis of a distance-time graph is the distance travelled from the start, and the horizontal axis is the time taken from the start.

How to interpret...

When an object is stationary, the line on the graph is horizontal. 

When an object is moving at a steady speed, the line on the graph is straight (but not horizontal)

The steeper the line the faster the object is travelling (as it is covering more distance in a shorter time), and vice-versa if the line is not steep, the object will be traveling slower.

If the line is sloping downwards, the object us returning to the start.

In this example: The blue line is steeper than the red line because it represents an object moving faster than the object represented by the red line. The red lines on the graph represent a journey where an object returns to the start again.