How to plot your graph. A distance/time graph shows time on one axis (x) and distance on the other axis (y). It is important to plot the important information from the problem.

To find the distance travelled, look at the area under the graph. In the first 10 seconds this is the area of the triangle, ½ × 10 s × 40 m/s = 200 m. From 10 to 20 seconds this is the area of ...