11.5 Real-life and distance-time graphs — Practise

Work independently in order. The later questions mix this section with earlier methods. Questions marked H are Higher only.

1. A cyclist travels 18 km in 1.5 hours. Find the constant speed.
2. A car travels at 60 km/h for 2.5 hours. Find its distance.
3. A distance-time graph rises from 0 km to 8 km in 40 minutes. Find speed in km/h.
4. What does a horizontal section on a distance-time graph show?
5. A walker is 6 km from home, then the graph slopes down to 2 km from home. Describe the journey.
6. A tap fills 9 litres in 3 minutes at a constant rate. How much in 8 minutes?
7. Which is faster: 30 km in 2 hours or 20 km in 1.25 hours?
8. A graph shows cost £5 at 0 items and £2 added per item. State the fixed cost and cost for 4 items.
9. A distance-time line has gradient 3 km per hour. How far in 5 hours at the same rate?
10. H A journey covers 12 km in 30 minutes and then 18 km in 45 minutes. Compare the two speeds.