ECZ 2024 · GCE Paper 1 — Variation

Given that y varies directly as x and inversely as the square of z, and k = 2, find y when x = 18 and z = 3.

Verified working — step 1

y = 2xz²

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Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.

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