Pass maths · Graphs

Interpreting real-life graphs

Learn the method, then complete five focused questions.

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LZ Method

Read labels and units. On a distance–time graph, gradient is speed and a horizontal section means stopped. A cost graph may have a fixed charge at zero distance.

01530450123Time (minutes)Distance (km)
  1. 1Distance–time: (0 min, 0 km), (30 min, 3 km), (45 min, 3 km)
  2. 2Speed on first section = 3 ÷ 0.5 = 6 km/h
  3. 3The final section is horizontal: stopped