The equation of a straight line on a graph is made up of a \(y\) term, an \(x\) term and a number, and can be written in the form of \(y = mx + c\).

To understand what a time graph is showing you, you need to look at three things: 1. Title - The title tells you what the graph is about. For example, "Temperature on the First of September." 2.

A shorter direct proof of that result was obtained by Geelen, Gerards, and Whittle [GGW00p]. However, to prove Theorem 7.0.1, the well-quasi-ordering for graphs of bounded tree-width is needed only ...