Question 18 — IGCSE 0580 Specimen 2025 Paper 21
Cambridge IGCSE Mathematics 0580, Extended tier, non-calculator. Topic: Functions and Graphs · Graphs of functions. Worth 9 marks.
Open in interactive question bank →
Question text
18 f(x) = 3 – 2x g(x) = 2x + 3 h(x) = 2x
(a) (i) Find f(–3).
............................................... [1]
(ii) Find gf(–3).
............................................... [1]
(b) Find f –1(x).
f –1(x) = .............................................. [2]
(c) Find x when gg(x) = 7 .
x = .............................................. [3]
(d) Find x when h –1(x) = 5 .
x = .............................................. [2]
© Cambridge University Press & Assessment 2022 0580/02/SP/25
13
Mark scheme
