ECZ 2016 · O-Level Paper 1 — Variation
It is given that w = kx²⁄y. If x = −6, y = 12 and w = 15, find k.
- A. 3
- B. 5
- C. 45
- D. 1⁄5
Verified working — step 1
Substitute into w = kx²⁄y: 15 = k(−6)²⁄12 = 36k⁄12 = 3k, so k = …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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