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0580/31 May/Jun 2025, Question 15: Finding the Equation From a Graph

Cambridge IGCSE Mathematics 0580 · Paper 31 (Core) · Calculator · 2 marks

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The question, in short

From six sketched straight-line graphs labelled A to F, identify which graph matches each of two given equations.

Summarised in our own words. Use the official paper for the exact wording and the diagram.

Part (a) · 1 mark

Choose the letter of the graph representing x = 3.

  1. 1x = 3 is a vertical line through 3 on the x-axis
  2. 2Graph E

AnswerE

Part (b) · 1 mark

Choose the letter of the graph representing y = 3x.

  1. 1y = 3x has positive gradient and passes through the origin
  2. 2Graph B

AnswerB

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Also searched as: 0580/31/M/J/25 · 0580_s25_qp_31 · 0580 s25 31 · question 15.
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