This video is a quick walkthrough of how to answer perpendicular line questions for GCSE maths, and is aimed at around grade 6 …. please do
– stop the video
– work through the questions
– compare your solutions
I hope the video helps and please do leave a comment – thanks!
Download a copy of the questions here:
Here’s a copy of the written answers:
1. Write down the equation of a line perpendicular to y = 4x + 6
2. Write down the equation of a line perpendicular to y = 4x + 6 which passes through (0, -4)
3. Find the equation of a line perpendicular to 4y – 2x + 8 = 0
4. Find the equation of a line perpendicular to y = -43x – 6 which passes through (0, 3)
5. Find the equation of a line perpendicular to 2y – 3x + 5 = 0 which passes through (0, -4)
6. Line A passes through the points (4,3) and (8,6). Find the equation of the line perpendicular to line A that passes through (6,12)
7. Line A passes through the points (1,1) and (4,7) Line B passes through the points (7,4) and (11,6) Determine whether Line A and line B are perpendicular.
8. Line A passes through the points (-5,-1) and (-1,11) Line B passes through the points (-4,1) and (k, 5) Line A and B are perpendicular. Find the value of k.
Here’s the timestamp:
0.58 Question 1
2:40 Question 2
3:10 Question 3
5:00 Question 4
5:50 Question 5
7:38 Question 6
10:40 Question 7
13:10 Question 8
These types of questions appear in all the main GCSE exam boards – Edexcel, AQA, OCR and Educas – and are fairly common for non calculator papers.
- Always work methodically and show your working
- Check your calculations
- Is it a reasonable answer?
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