year 8 maths

Chapter review
457
Short-answer questions
1 Write the coordinates of all the points A–J in the graph below.
y
C
4
3
A
2 B
D
1
F J x
−4−3−2−1O
−1 1 2 3 4
−2
H
E
−3
I
−4
G
2 For each rule create a table using x values from −3 to 3 and plot to draw a straight-line graph.
a y = 2x b y = 3x − 1 c y = 2x + 2
d y = −x + 1 e y = −2x + 3 f y = 3 − x
3 Write the rule for these tables of values.
a
x −2 −1 0 1 2
y −3 −1 1 3 5
b x −2 −1 0 1 2
y −4 −1 2 5 8
c
x 3 4 5 6 7
d
x −3 −2 −1 0 1
y 6 7 8 9 10
y 4 3 2 1 0
e
x −1 0 1 2 3
y 3 −1 −5 −9 −13
f x −6 −5 −4 −3 −2
y 8 7 6 5 4
4 Find the rule from these graphs.
a
y
b
y
c
y
4
3
2
1
O
1
(1, 3)
2
x
3
2
1
O
(2, 1)
1
2
x
O
−1
−2
−3
(1, 0)
1 2 3
(0, −2)
x
d
y
3
2
(−1, 1) 1
O
−2 −1
−1
1
x
e
y
4 (0, 4)
3
2
1
(1, 0)
−1
O
−1
1 2
x
f
(−2, 6)
y
7
6
5
4
3 (0, 3)
2
1
−2−1
O
−1 1 2 3
x
Cambridge Maths NSW
Stage 4 Year 8 Second edition
ISBN 978-1-108-46627-1 © Palmer et al. 2018
Cambridge University Press
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