This distance-time graph shows the journey Tanya made when she jogged away from her home and then returned. What was Tanya's speed during the return journey? Give your answer in kilometres per hour (km/h) and give any decimal answers to 1 d.p. Distance from home (km) 16+ 14 12- 10- 8- 6- 4 2. 12 2 3 4 5 6 Time (hours)