ECZ 2012 · O-Level Paper 1 — Linear Programming
A region R is defined by y <= x, x + y <= 4 and y >= 0. Which of these points lies inside region R?
- A. (1, 3)
- B. (3, 2)
- C. (-1, 2)
- D. (2, 1)
Verified working — step 1
Test each inequality at (2, 1): y <= x gives 1 <= 2, true; x + y <= 4 gives 3 <= 4, true; y > = …The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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