ECZ 2024 · GCE Paper 1 — Variation
Given that y varies directly as x and inversely as the square of z, and that x = 8 when y = 4 and z = 2, find the constant of variation k.
- A. 2
- B. 1
- C. 8
- D. 4
Verified working — step 1
Turn the words into a formula before touching any numbers: "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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