The circle C C\,C has the equation x2+y2−4x−6y=48x^2 + y^2 - 4x - 6y = 48x2+y2−4x−6y=48
Find the coordinates of the centre of CCC.
Find equation of the tangent to the circle at the point (7,9)(7, 9)(7,9).
76 exam-style questions on WJEC A Level Maths 1.3 Coordinate geometry in the (x, y) plane, covering 1.3.1 Coordinate geometry in the (x, y) plane, 1.3.2 Coordinate geometry in the (x, y) plane, 1.3.3 Coordinate geometry in the (x, y) plane, and 1.3.4 Coordinate geometry in the (x, y) plane. Each one has a worked solution and a mark scheme showing where the marks go.