0580/11 May/Jun 2026, Question 20: Finding the Equation From a Graph
Cambridge IGCSE Mathematics 0580 · Paper 11 (Core) · Non-calculator · 3 marks
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The question, in short
From a grid diagram of straight line L, find its equation in the form y = mx + c.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 3 marks
- 1L crosses the y-axis at 4, so c = 4
- 2L passes through (0, 4) and (10, 1)
- 3m = (1 − 4)/(10 − 0) = −3/10 = −0.3
- 4y = −0.3x + 4
Answery = −0.3x + 4
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Also searched as: 0580/11/M/J/26 · 0580_s26_qp_11 · 0580 s26 11 · question 20.
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