ECZ 2022 · O-Level Paper 1 — Variation
y varies directly as the square of x and inversely as z, and y = 2 when x = 4 and z = 24. Find the value of k, the constant of variation.
- A. 6
- B. 24
- C. 3
- D. 13
Verified working — step 1
Translate the words first: "directly as the square of x" puts x2 on top; "inversely as z" puts z underneath.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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