4MA1/1FR Jun 2022, Question 26: The Equation y = mx + c
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1FR (Foundation) · Calculator · 3 marks
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The question, in short
A straight line L is shown on a coordinate grid. Find an equation for L 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
- 1(5 − (−1)) / (4 − 0) = 6 / 4 = 1.5
- 2c = −1
- 3y = 1.5x + c
- 4using point (0, −1), y = 1.5x − 1
Answery = 1.5x − 1
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