1 Copyright Cambridge University Press 2012 Cambridge Checkpoint Mathematics 7 F Exercise 13.1 1 D(6, 3), E(−5, −3), F(2, −3), G(−3, 5) 2 a P(4, −3), Q(4, 1) b (4, −1) 3 a y x 2 1 3 5 4 –2 –1 –2 –1 –3 2 1 3 5 4 0 b (−2, 2) 4 a 0 y x 2 1 3 –2 –1 –2 –1 –3 –4 –5 –6 2 1 3 5 6 7 4 b (4, −3) 5 a –2 –4 –6 –7 –1 –3 –5 –2 –3 –1 0 2 3 1 y x 2 1 b (−3, −1) 6 a 0 y x 2 1 3 5 6 4 –2 –3 –4 –5 –1 –2 –4 –1 –3 2 1 3 5 4 b (−4, 5) Answers to Coursebook exercises 13 Graphs
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1Copyright Cambridge University Press 2012 Cambridge Checkpoint Mathematics 7
F Exercise 13.1
1 D(6, 3), E(−5, −3), F(2, −3), G(−3, 5)
2 a P(4, −3), Q(4, 1) b (4, −1)
3 a y
x
2
1
3
5
4
–2 –1
–2
–1
–3
21 3 540
b (−2, 2)
4 a
0
y
x
2
1
3
–2 –1
–2
–1
–3
–4
–5
–6
21 3 5 6 74
b (4, −3)
5 a
–2–4–6–7 –1–3–5
–2
–3
–10
2
3
1
y
x21
b (−3, −1)
6 a
0
y
x
2
1
3
5
6
4
–2–3–4–5 –1
–2
–4
–1
–3
21 3 54
b (−4, 5)
Answers to Coursebook exercises13 Graphs
2
Unit 13 Answers to Coursebook exercises
Copyright Cambridge University Press 2012Cambridge Checkpoint Mathematics 7
7 a, b
0
y
x
2
1
3
–2–3–4 –1
–2
–1
–3
–4
–5
–6
21 3 5 64
c (1, −1)
8 a
0
y
x
2
1
3
–2–3 –1
–2
–1
–3
–4
21 3 5 64
b parallelogramc (1, 0)
F Exercise 13.2
1 a y = 2 b x = 3 c y = −3 d x = −2
2 a
0
y
x
x = 7
y = –4
2
1
3
–2–3 –1
–2–1
–3
–5
–4
21 3 5 6 7 84
b (7, −4)
3 a
0
y
x
B A
C D
8
2
1
3
5
7
6
4
–2–3–4–5–7 –6 –1
–2–1
21 3
b x = −6 c y = 7 d x = −2 and y = 44 a x = 4 b y = 6 c x = −5
3
Answers to Coursebook exercises Unit 13
Copyright Cambridge University Press 2012 Cambridge Checkpoint Mathematics 7
5 y = 2
6 a
0
y
x
8
2
1
3
5
7
6
9
4
–2–3–4–5–6 –1
–2–1
–3
–4
–5
21 3
b x = −2 and y = 2
F Exercise 13.3
1 a The missing values are −1, 4 and 8.b
–2–4 0
2
4
6
8
y
x2 4
2 a The missing values are −3, 5 and 9.b
0
8
10
11y
x
2
1
3
5
7
6
9
4
–2–3–4–5 –1
–2–1
–3
–4
21 3 4
4
Unit 13 Answers to Coursebook exercises
Copyright Cambridge University Press 2012Cambridge Checkpoint Mathematics 7
3 a The missing values are −4, −1, 1 and 3.b
0
y
x
2
1
3
5
4
–2–3 –1
–2–1
–3
–4
–5
21 3 5 6 74
c At (3, 0)
4 a The missing values are 8, 3 and −1.b
0
y
x
8
2
1
3
5
7
6
9
4
–2–3 –1
–2–1
–3
–4
21 3 5 6 7 8 94
c At (5, 0)
5 a The missing values are 6, 2, 0 and −3.b
0
y
x
2
1
3
5
7
6
4
–2–3–4–5 –1
–2–1
–3
21 3 5 64
5
Answers to Coursebook exercises Unit 13
Copyright Cambridge University Press 2012 Cambridge Checkpoint Mathematics 7
6 a The missing values are −2, 2, 6 and 12.b
0
y
x
8
10
11
12
13
2
1
3
5
7
6
9
4
–2–3–4–5 –1
–2–1
–3
–4
–5
–6
21 3 54
7 a The missing values are 5, 3, 1, −5.b
0
y
x
8
2
1
3
5
7
6
9
4
–2–3 –1
–2–1
–3
–4
–5
–6
–7
21 3 54
6
Unit 13 Answers to Coursebook exercises
Copyright Cambridge University Press 2012Cambridge Checkpoint Mathematics 7
8 a The first y-value is −10.b
0
y
x
2
1
3
5
7
6
4
–2–3 –1
–2–1
–3
–4
–5
–6
–7
–8
–9
–10
–11
21 3 5 6 74
c At (2, 0) and (0, −4)
9 a, b
0
y = 6 – x
y
x
y = 2
8
2
1
3
5
7
6
9
4
–2–3 –1
–2–1
21 3 5 6 7 8 94
c At (4, 2)
End of unit review1 a, b
0
y
x
W
M
V
2
1
3
5
6
4
–2–3 –1
–2
–121 3 54
b (1, 2)
7
Answers to Coursebook exercises Unit 13
Copyright Cambridge University Press 2012 Cambridge Checkpoint Mathematics 7
2 a (−2, 1),
0
y
x
2
1
3
5
6
4
–2–3–4–5–6–7 –1
–2–1
–3
21
b (−4, 3)
3 a, b
0
y
x
2
1
3
–2 –1
–2–1
–3
–4
–5
21 3 5 6 74
b (4, −1)
4 a y = 3 b x = 4 c y = 0 d x = −3
5 a
–2 –1–3 6421 53
–4
–5
–2–1
0
2
3
1
y
x
S
P Q
R
b y = 1 c x = −1 d x = 2 and y = −1
6 y = 2
7 a The missing values are −7, −4 and 2.b
0
y
x
2
1
3
–2–3 –1
–2–1
–3
–4
–5
–6
–7
21 3 5 6 74
c (4, 0)
8
Unit 13 Answers to Coursebook exercises
Copyright Cambridge University Press 2012Cambridge Checkpoint Mathematics 7
8 a The missing values are −4, 2 and 6.b
0
y
x
8
2
1
3
5
7
6
4
–2–3–4 –1
–2–1
–3
–4
21 3 4
9 a The missing values are 8, 2, 0 and −2.b
0
y
x
8
2
1
3
5
7
6
4
–2 –1
–2
–121 3 54
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