TRUTH
Graphs are illustrations that serve to analyze data from various experiments. There are several types of graphics, including line graphics. One of the main positive features of charts is that they allow you to analyze more than one type of information at a time by relating this information.
For example, in an economy chart, where the horizontal axis is the quantity demanded and in the vertical axis the price, the line will establish the quantities demanded for several price levels. Thus, more than one information is analyzed at the same time. This can be further improved, for example, with information on supply.