4MA1/1FR Jun 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 −1 to 4.
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Solution · 3 marks
- 1Work out y for each x: x = −1 gives y = 3(−1) − 2 = −5
- 2x = 0 gives y = −2, x = 2 gives y = 4, x = 4 gives y = 10
- 3Plot (−1, −5), (0, −2), (1, 1), (2, 4), (3, 7), (4, 10)
- 4Join them with a ruled straight line from x = −1 to x = 4
Answera straight line passing through the points (−1, −5), (0, −2), (1, 1), (2, 4), (3, 7), and (4, 10)
Stuck on a step? Read the free lesson: Drawing Straight-Line Graphs
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