A straight line, LLL, passes through the point with coordinates (4,k)(4, k)(4,k) and is perpendicular to the line with equation y=2x+3y = 2x + 3y=2x+3.
Find an equation of the straight line L L\,L in terms of kkk.
130 exam-style questions on WJEC 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.