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 ...

A function is a rule that is applied to one set of values to give another set of values. A function can be illustrated on a graph - points are plotted as coordinates and joined by either a ...

At the point (or points) where two graphs intersect, the \(x\) and \(y\) values are the same for both functions. We use this information to find the solution to simultaneous linear equations.