Line A passes through the points (1,2)(1, 2)(1,2) and (7,5)(7, 5)(7,5).
Find the gradient of line A.
Hence find the equation of the line perpendicular to A that passes through (3,1)(3, 1)(3,1).
204 exam-style questions on OCR GCSE Maths Parallel and Perpendicular Lines. Each one has a worked solution and a mark scheme showing where the marks go.