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.

Learn how to draw and understand information presented by a line graph with this interactive guide by BBC Bitesize for KS2 pupils. ... on this graph, the vertical axis goes up in steps of 2 degrees.

All the points on the vertical line below have an x-coordinate of \(7\), so you can say that the equation of the line is \(x = 7\). Graph forms All vertical line graphs have an equation of the form: ...