There are a variety of ways line graphs can be used to clearly display complex information. Each axis is named by the quantity labelled on it. This might be \(x\) and \(y\), or time and temperature.

The scale on the left graph is inappropriate. The numbers go up higher than necessary on both axes. This means the points are squashed into a small part of the graph area and are difficult to read ...

The “napkin diagram” graph shows future climate change scenarios under four different strategies: 1) business as usual, or no reduction of greenhouse gas emissions (red line); 2) aggressive cuts in ...