Revise how to recognise and determine the equation of a quadratic function from its graph. BBC Bitesize Scotland revision for SQA National 5 Maths.

Many former algebra students have painful memories of struggling to memorize the quadratic formula. A new way to derive it, overlooked for 4,000 years, is so simple it eliminates the need.

2.Quadratic Equation: An equation of the form a 2 x + bx + c = 0 , a ≠ 0 , is called a quadratic equation in one variable x, where a, b, c are constants.