4MA1/2FR Jun 2025, Question 6: Functions as a Mapping
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2FR (Foundation) · Calculator · 2 marks
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The question, in short
A number machine multiplies the input by 4 then subtracts 15; find the output for two given inputs.
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Part (a) · 1 mark
Work out the output when the input is 10.
- 110 × 4 = 40
- 240 − 15 = 25
Answer25
Part (b) · 1 mark
Work out the output when the input is −2.
- 1−2 × 4 = −8
- 2−8 − 15 = −23
Answer−23
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