ECZ 2012 · O-Level Paper 1 — Relations and Functions
Given that f(x) = 3x - 52, find f(-9).
- A. -16
- B. 16
- C. -11
- D. -32
Verified working — step 1
f(-9) = (3(-9) - 5)/2 = -27 - 52= -322= …The full step-by-step working and final answer 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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