f(g(x)): Mixed Review

Mathematics
GCSE Foundation
11 questions
~22 mins
1 views0 downloads

About This Worksheet

A worksheet covering composite functions f(g(x)) designed for GCSE Foundation students, including practice, problem solving, real-world applications, and extension questions.

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f(g(x)): Mixed Review

Subject: MathematicsGrade: GCSE Foundation
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Untitled Worksheet

Grade GCSE Foundation
A

Practice Questions

Answer all questions. Show your working in the grid spaces provided.
1.
Given f(x) = 2x + 3 and g(x) = x^2, calculate f(g(2)).
[2 marks]
2.
If f(x) = 3x - 5 and g(x) = x + 4, find the value of f(g(3)).
[2 marks]
3.
Calculate the value of f(g(0)) for f(x) = x^2 + 1 and g(x) = 2x.
[2 marks]
4.
Construct the graph of y = 2x + 1 and then sketch the graph of f(g(x)) where f(x) = x + 3 and g(x) = 2x.
[3 marks]
5.
Evaluate f(g(5)) where f(x) = x^2 - 4 and g(x) = 3x + 1.
[2 marks]
6.
If f(x) = 5 - x and g(x) = x/2, find the value of f(g(4)).
[2 marks]
7.
A function g(x) = 4x - 7 is composed with f(x) = 2x + 5. Find f(g(-1)).
[2 marks]
8.
Plot the graph of y = x^2 and then sketch the graph of f(g(x)) where f(x) = x + 2 and g(x) = √x. (Use the grid for drawing.)
[3 marks]
9.
Solve for x: f(g(x)) = 9, where f(x) = x + 4 and g(x) = 2x.
[3 marks]
10.
Evaluate f(g(x)) for f(x) = x^3 - x and g(x) = 2x + 1 when x=3.
[2 marks]
11.
A student makes the mistake of swapping f and g, calculating g(f(2)) instead of f(g(2)). For f(x)=x+4 and g(x)=2x, find g(f(2)) and compare it to f(g(2)).
[3 marks]

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Details

Created
1/1/2026
Updated
1/1/2026
Type
worksheet