How to Graph a Function in Excel. A mathematical function is a formula that takes an input, x, applies a set of calculations to it, and produces an output called y. By calculating a function at a ...

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

NOTE: There is one case where this function does not work, and that’s with a non-breaking space character used in webpages. The decimal value is 160, and the HTML code is &nbsp.