The equation of a straight line can also be written in the form \(f(x) = mx + c\). This is called function notation and is just another way of expressing the relationship between two variables.

(x)\). To find an inverse function, form an equation by giving the output value a name using a letter (such as \(y\)), then rearrange the equation to make \(x\) the subject.

Google Docs' equations editor is based on LaTeX syntax. As a result, you can use shortcuts to write math notations quickly.