Solving quadratic equations - Edexcel Graphs of quadratic functions. ... Example. Draw the graph of \(y = x^2 -x – 4 \) and use it to find the roots of the equation to 1 decimal place.

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

You can also plot graphs for trigonometric equations (equations that use sine, cosine, and tan, etc.), establish graphs for linear and quadratic inequalities, and even plot graphs for various ...