ECZ 2015 · O-Level Paper 1 — Variation
y is proportional to x³ with constant of variation k = 14. Find y when x = 4.
- A. 16
- B. 1
- C. 100
- D. 64
Verified working — step 1
y = (14)x³ = (14) × 4³ = (14) × 64 = …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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