ECZ 2022 · GCE Paper 1 — Variation
y varies directly as x and inversely as the square of z and y = 8 when x = 4 and z = 1. Find the (c) values of z when y = 3 and x = 54.
- A. z = 3 or z = -3
- B. z = 6
- C. z = 36 or z = -36
- D. z = 6 or z = -6
Verified working — step 1
3 = 254z2The 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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