0580/21 Oct/Nov 2021, Question 11: Perpendicular Lines
Cambridge IGCSE Mathematics 0580 · Paper 21 (Extended) · Calculator · 3 marks
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The question, in short
Given line L as y = 4 − 5x, determine the equation of a line perpendicular to L that goes through (0, 6).
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Solution · 3 marks
- 1Gradient of L = −5
- 2Perpendicular gradient = 1/5
- 3Passes through (0, 6), so c = 6
- 4y = (1/5)x + 6
Answery = (1/5)x + 6
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