4MA1/2H Jun 2020, Question 6: The Equation y = mx + c
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2H (Higher) · Calculator · 2 marks
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The question, in short
Using the straight line L drawn on a coordinate grid through (0, −2), (1, 1) and (2, 4), work out an equation that describes L.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 2 marks
- 1L crosses the y-axis at −2, so c = −2
- 2Gradient from (0, −2) to (1, 1): 3 ÷ 1 = 3
- 3y = 3x − 2
Answery = 3x − 2
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