ECZ 2020 · GCE Paper 1 — Variation

It is given that y varies inversely as the square of x. The table below shows some values of x and corresponding values of y. x2b6y94a Find the (c) values of b.

  • A. b = 3 or b = -3
  • B. b = 9 or b = -9
  • C. b = 3
  • D. b = 6 or b = -6

Verified working — step 1

4 = 36b2

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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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