ECZ 2017 · GCE Paper 1 — Variation
y varies inversely as the square root of x (y = k/√x). Given that y = 2 when x = 16, find the value of k.
- A. 12
- B. 32
- C. 8
- D. 2
Verified working — step 1
Substitute the known pair into y = k/√x, taking the square root before solving.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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