ECZ 2026 · GCE Paper 1 — Relations and Functions

Given that f(x) = 2x - 9 and g(x) = x + 5, find the value of x for which fg(x) = 1.

Verified working — step 1

Build the rule for fg(x) first (g acts first), then set it equal to 1 and solve.

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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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