Prime DSE Series - Mathematics Mock Exam Papers (Compulsory)(Sixth Edition) Set 2 Paper 1&2

4 HKDSE-MATH-CP (Set 2 P1) Answers written in the margins will not be marked. Answers written in the margins will not be marked. Answers written in the margins will not be marked. © United Prime Educational Publishing (HK) Ltd. 5. Consider the formula x y x y 3 4 + = - . (a) Make x the subject of the above formula. (b) If the value of y is changed from 5 to 12, find the change in the value of x . (4 marks) 6. (a) Solve the inequality ( ) x x 2 5 6 3 4 $ + - . (b) How many positive integers satisfy both the inequalities ( ) x x 2 5 6 3 4 $ + - and x 4 32 0 1 - ? (4 marks) Sample © United Prime Educational Publishing (HK) Limited 2025 All rights reserved; no part of this publication may be reproduced, photocopied, recorded or otherwise, without the prior written permission of the Publisher.