year 8 maths

322 Chapter 5 Ratios and rates
4 The Wilson family drove from their home to a relative’s place for lunch and then back home again.
This distance–time graph shows their journey.
Distance from home (km)
200
150
100
50
S
R
Q
T
P
0
9 a.m.10 a.m. 11 a.m.noon1 p.m. 2 p.m. 3 p.m.
Time
For each description below, choose the line segment of the graph that matches it.
1
a A hour rest break is taken from 10 a.m. to 10:15 a.m.
4
b The Wilson’s drove 100 km in the first hour.
c
The car is stopped for 1 3 4 hours.
d The car travels from 100 km to 200 km away from home in this section of the journey.
e At the end of this segment, the Wilsons start driving back to their home.
f The Wilsons travel from 1 p.m. to 3 p.m. without stopping.
g At the end of this segment, the Wilsons have arrived back home again.
5 This distance–time graph shows Levi’s walk from his home to school one morning.
Distance from home (m)
240
160
80
0
0
1 2 3 4
Time (minutes)
a How far did Levi walk in the first minute?
b How long did it take Levi to walk 120 m from home?
c How far had Levi walked when he stopped to talk to a friend?
d How long did Levi stop for?
e How far had Levi walked after 3 minutes?
f How far was the school from Levi’s home?
Cambridge Maths NSW
Stage 4 Year 8 Second edition
ISBN 978-1-108-46627-1 © Palmer et al. 2018
Cambridge University Press
Photocopying is restricted under law and this material must not be transferred to another party.