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

This guide provides step-by-step instructions with examples how to extract a substring in Excel using various text functions.

Find the data you need in an Excel sheet more easily with these functions.

All quadratic functions have the same type of curved graphs with a line of symmetry. The graph of the quadratic function y = a x 2 + b x + c is a smooth curve with one turning point.