Analysis and Approaches for IBDP Maths Ebook 1 | Page 317

Chapter 9
Exercise 30
30.1 (a) x� 2y� 2 � 0
(b) x-intercept �� 2
y-intercept � 1
30.2 (a) 3x� y� 20 � 0
(b)
20
x-intercept ��
3
y-intercept �� 20
30.3 (a) 3x� y�14 � 0
30.4 (a) 5x� y� 20 � 0
Exercise 31
31.1 (a)
1
Gradient �
2
y-intercept � 8
(b) x� 2y�12 � 0
31.2 (a)
3
Gradient ��
2
4
x-intercept �
3
(b) 3x� 2y�11 � 0
31.3 (a) Gradient �� 3
x-intercept �� 7
(b) x�3y� 7 � 0
31.4 (a)
1
Gradient �
2
17
y-intercept ��
4
(b) 8x� 4y�17 � 0
Chapter 10
Exercise 32
32.1 (a)
(b)
5
3
4 5
9
32.2 (a)
(b)
32.3 (a)
(b)
32.4 (a)
(b)
Exercise 33
5
6
7
18
3
�
5
24
�
25
33.1 (a) 4
(b) 2
(c) � 2
33.2 (a) 16
(b)
1
4
(c) 44
33.3 (a) 2�
(b) 6
(c)
�
12
33.4 (a) 10
(b)
1
3
(c) 0
Exercise 34
1�
m
m
2
2m
1�
m
2
2m
�1
34.1 (a) (i) 3.5
(ii) 2
(b) Refer to solution
34.2 (a) (i) 3
(ii) 2
(b) Refer to solution
34.3 (a) (i) 4
(ii) 2�
(b) Refer to solution
34.4 (a) (i) 3
(ii) 4�
(b) Refer to solution
2
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