The points A(−1,a)A(-1, a)A(−1,a) and B(10,4)B(10, 4)B(10,4) lie on a circle. AB AB\,AB is a diameter of the circle and has a gradient of 511\displaystyle \frac{5}{11}115. The circle has equation (x−c)2+(y−d)2=e(x - c)^2 + (y - d)^2 = e(x−c)2+(y−d)2=e where ccc, d d\,d and e e\,e are rational numbers.
Find the values of aaa, ccc, d d\,d and eee.
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.