Line A passes through the points (1,5)(1, 5)(1,5) and (5,7)(5, 7)(5,7). Verify that the equation of the line perpendicular to A that passes through (−1,7)(-1,7)(−1,7) is y=−2x+5y = -2x + 5y=−2x+5.
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.