4MA1/2F Nov 2021, Question 14: Drawing Straight-Line Graphs
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2F (Foundation) · Calculator · 3 marks
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The question, in short
On the provided grid, plot the straight line y = 1 − 3x for x values between −2 and 3.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 3 marks
- 1Work out y for each x: x = −2 gives y = 1 + 6 = 7
- 2x = −1, 0, 1 give y = 4, 1, −2
- 3x = 2, 3 give y = −5, −8
- 4Plot (−2, 7), (−1, 4), (0, 1), (1, −2), (2, −5), (3, −8) and join with a straight line
AnswerA straight line through (−2, 7), (−1, 4), (0, 1), (1, −2), (2, −5), (3, −8)
Stuck on a step? Read the free lesson: Drawing Straight-Line Graphs
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