Find the values of k k\,k for which the curve y=2x2+7x+ky = 2x^2 + 7x + ky=2x2+7x+k does not intersect the line y=2y = 2y=2
211 exam-style questions on Edexcel A Level Maths Quadratics, covering 2.1 Solving Quadratics, 2.2 Completing the Square, 2.3 Sketching Quadratic Graphs, 2.4 The Discriminant, and 2.5 Modelling with Quadratics. Each one has a worked solution and a mark scheme showing where the marks go.