Parallel and Perpendicular Lines GCSE Maths
Parallel and perpendicular line questions combine graph and algebra skills in GCSE Maths.
Important Coordinate Skills
- Recognising equal gradients
- Using negative reciprocal gradients
- Interpreting equations carefully
- Working accurately with coordinates
Exam tip: Parallel lines always have the same gradient.
Common mistake: Forgetting perpendicular gradients are negative reciprocals.
Video explanation
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