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4MA1/1H Jan 2021, Question 13: The Gradient of a Straight Line

Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1H (Higher) · Calculator · 3 marks

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The question, in short

Given points A(5, 8) and B(9, −4), find the gradient of AB, and state the gradient of a line perpendicular to y = −4x + 5.

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

Part (a) · 2 marks

Calculate the gradient of the line through A(5, 8) and B(9, −4).

  1. 1(8 − (−4)) / (5 − 9)
  2. 212 / (−4)
  3. 3−3

Answer−3

Part (b) · 1 mark

Give the gradient of a line perpendicular to the line y = −4x + 5.

  1. 1The gradient of L is −4
  2. 2Gradient of perpendicular line is −1 / (−4)
  3. 31/4

Answer1/4

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