Show that line 2y=4x−142y = 4x - 142y=4x−14 is perpendicular to line 4y=−2x+484y = -2x + 484y=−2x+48
130 exam-style questions on CCEA GCSE Maths Perpendicular Lines and the equation of a tangent. Each one has a worked solution and a mark scheme showing where the marks go.