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 ...

Derivatives: definitions, notation, and rules A derivative is a function which measures the slope. It depends upon x in some way, and is found by differentiating a function of the form y = f (x). When ...

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

The linear function is popular in economics. It is attractive because it is simple and easy to handle mathematically. It has many important applications. Linear functions are those whose graph is a ...

Graph of y = f (x) + k Adding or subtracting a constant k to a function has the effect of shifting the graph up or down vertically by k units.