The diagram shows line with equation y+3x=3y + 3x = 3y+3x=3 which is a tangent to a circle with centre (8,−1)(8, -1)(8,−1).
Find an equation for the circle.
292 exam-style questions on Edexcel A Level Maths Circles, covering 6.1 Midpoints and Perpendicular Bisectors, 6.2 Equation of a Circle, 6.3 Intersections of Straight Lines and Circles, 6.4 Use Tangent and Chord Properties, and 6.5 Circles and Triangles. Each one has a worked solution and a mark scheme showing where the marks go.