Lemmara logoLemmaraWorked solution

4MA1/2F Jan 2020, Question 8: Drawing Straight-Line Graphs

Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2F (Foundation) · Calculator · 4 marks

اقرأ هذا الحل مشروحاً بالعربي ←

The question, in short

Complete a table of y values for y = 3x − 1, then plot the graph of this equation on a grid for x from −1 to 6.

Summarised in our own words. Use the official paper for the exact wording and the diagram.

Part (a) · 2 marks

Fill in the missing y values in the table for y = 3x − 1 at the given x values.

  1. 1Substitute each x into y = 3x − 1, e.g. x = −1: y = −3 − 1 = −4
  2. 2x = 1: y = 2; x = 3: y = 8; x = 4: y = 11; x = 6: y = 17
  3. 3Row: −4, −1, 2, 5, 8, 11, 14, 17

Answer−4, −1, 2, 5, 8, 11, 14, 17

Part (b) · 2 marks

Draw the straight-line graph of y = 3x − 1 on the grid for x values from −1 to 6.

  1. 1Plot points (−1, −4), (0, −1), (1, 2), (2, 5), (3, 8), (4, 11), (5, 14), (6, 17)
  2. 2Draw straight line through the points from x = −1 to x = 6

AnswerA straight line through (−1, −4), (0, −1), (1, 2), (2, 5), (3, 8), (4, 11), (5, 14), (6, 17)

Stuck on a step? Read the free lesson: Drawing Straight-Line Graphs

Practise more drawing straight-line graphs questions

Real 4MA1 past-paper questions, marked on your working like the exam, with a worked solution for every part.

Practise free on Lemmara

More past-paper questions on drawing straight-line graphs

Also searched as: 4MA1 2F January 2020 · 4MA1/2F · 4ma1 jan20 2f · question 8.
Lemmara is an independent study tool, not affiliated with or endorsed by Pearson Edexcel. The worked solutions are Lemmara’s own.