Build and analyze functions that describe relationships between quantities, and use function notation (for example, f (x) denotes the output of f corresponding to the input of x) ...

A function is a rule or set of rules or instructions for changing one input number into another output number. Functions are written in function notation with the name of the function (usually f ...

Determining the equation of a straight line Function notation The equation of a straight line can be worked out using coordinates and the gradient, and vice versa.