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 value of k, the constant of variation.
- A. 2
- B. 8
- C. 12
- D. 32
Verified working — step 1
Translate the words first: "directly as x" puts x on top; "inversely as the square of z" puts z2 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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