4MA1/1FR Jan 2020, Question 11: Drawing Straight-Line Graphs
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1FR (Foundation) · Calculator · 3 marks
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The question, in short
On the given grid, plot the straight-line graph of y = 3x + 2 for x values from −2 to 4.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 3 marks
- 1x = −2 gives y = 3(−2) + 2 = −4
- 2x = 0 gives y = 2; x = 4 gives y = 14
- 3Plot these and the other whole-number x values, then join with a ruler
- 4A straight line through (−2, −4), (−1, −1), (0, 2), (1, 5), (2, 8), (3, 11), (4, 14)
AnswerA straight line through (−2, −4), (−1, −1), (0, 2), (1, 5), (2, 8), (3, 11), (4, 14)
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