ECZ 2025 · O-Level Paper 1 — Variation
Three variables p, q and r are such that p varies as q and inversely as the square of r. p96aq127242r2b3 Find the value of k, the constant of variation.
- A. 1
- B. 3
- C. 9
- D. 27
Verified working — step 1
Translate the words first: "varies as q" puts q on top; "inversely as the square of r" puts r2 underneath. Then read one COMPLETE column of the table.The full step-by-step working and final answer, plus the video lesson for this topic, 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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