0580/22 May/Jun 2021, Question 17: Perpendicular Lines
Cambridge IGCSE Mathematics 0580 · Paper 22 (Extended) · Calculator · 2 marks
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The question, in short
Work out the gradient of a line perpendicular to 3y = 4x − 5.
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Solution · 2 marks
- 13y = 4x − 5 gives y = 4/3 x − 5/3
- 2Gradient = 4/3
- 3Perpendicular gradient = −1 ÷ 4/3
- 4= −3/4
Answer−3/4 or −0.75
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