Revise how to recognise and determine the equation of a quadratic function from its graph. BBC Bitesize Scotland revision for SQA National 5 ... the vertex is a minimum turning point. If k < 0, ...

Learn and revise how to solve quadratic equations by factorising, completing the square and using the quadratic formula with Bitesize GCSE Maths Edexcel.

The graph of a quadratic equation forms a parabola. The technique of graphing as it is practiced today is based on the work of René Descartes. (Image credit: Robert Coolman) ...