The circle C C\,C has the equation x2+y2−14x−2y+25=0x^2 + y^2 - 14x - 2y + 25 = 0x2+y2−14x−2y+25=0
The line with equation y=kxy = kxy=kx where k k\,k is a constant, meets C C\,C at two distinct points. Find the range of possible values of kkk.
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.