Paper 2 · Co-ordinate Geometry of the Line
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Lesson 5 of 9
The line 5: Perpendicular distance from a point to a line
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- Find the distance from a point to a line with d = |ax₁ + by₁ + c|/√(a² + b²)
- Rearrange the line to ax + by + c = 0 first, watching the sign of c
- Solve for unknowns like k by splitting |X| = k into ± cases
- Find two parallel lines a set distance away, or a point midway between parallel lines
Most recent exam questions
- 2026 P2 Q4(c)
- 2025 P2 Q1(b) — deferred
- 2025 P2 Q6(b)(i) — deferred
- 2024 P2 Q6(b)
- 2023 P2 Q4(a)(ii)
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