Question

6. Tom cycles to his Grandmother’s house, which is 12km from his home.

He stays there for 45 minutes.

The distance-time graph shows his journey.

Work out the fastest speed that Tom cycles at on his way to his grandmother’s house.

Answer 1

fastest: his rate of change from 9am-9:30am was 4 km per 15 minutes

Explanation:

his rate of change between 10-11am was zero

between 9:30 and 10:00 his rate of change was 2 km per 15 minutes