Apps. and Interpretation for IBDP Maths Ebook 1 | Page 124

Your Practice Set – Applications and Interpretation for IBDP Mathematics
Solution
(a)
2
30 km A1 N1
(b) (i) The mid-point of AC
(ii)
�3�7 3�9
�
� � , �
(A1) for substitution
� 2 2 �
� (5, 6)
A1 N2
The required perpendicular distance
�The distance between C and the
mid-point of AC
2 2
� (7 �5) � (9 � 6)
(M1) for valid approach
� 3.605551275
� 3.61 km A1 N2
(c) The post office A A1 N1
[1]
[4]
[1]
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