The line l1 l_1\,l1 has equation y=3x−7y = 3x - 7y=3x−7.
The line l2 l_2\,l2 is perpendicular to l1 l_1\,l1 and passes through the point (6,2)(6, 2)(6,2).
Find an equation for l2l_2l2, giving your answer in the form y=mx+cy = mx + cy=mx+c.
143 exam-style questions on AQA A Level Maths 1.6 C: Coordinate geometry in the (x, y) plane, covering 1.6.1 Equation of a straight line, 1.6.2 Coordinate geometry of the circle, 1.6.3 Parametric equations of curves (A-level only), and 1.6.4 Parametric equations in modelling (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.