Parallel and perpendicular lines
Parallel lines share a gradient; perpendicular gradients multiply to −1. Use both to find equations, including perpendicular bisectors.
You will be able to
- Recognise parallel and perpendicular lines from their equations
- Find the equation of a parallel or perpendicular line through a point
- Find the perpendicular bisector of a line segment
25 minutes, 7 exam-style questions, with the Graphing Calculator.