There are various different ways to graph information, but the part that tells you what the bars or lines represent is called a label. A label might appear next to a line, or a bar, or it might only appear on the x axis and the y axis.
legend
A pie graph represent data as a part of a whole, showing the separate portions of the data in accordance to the whole.
The KEY or LEGEND tells the viewer what the lines represent. The labels along the axes usually tell the viewer what the units are, but the title of the graph can be used to tell the viewer the units as well or instead.
it is the y axis or part of the y axis
legend
There are various different ways to graph information, but the part that tells you what the bars or lines represent is called a label. A label might appear next to a line, or a bar, or it might only appear on the x axis and the y axis.
legend
the x-axies
It is the legend or key.
the x-axies
The axis labels.
the x-axies
The Key?
It tells you that the two variables in the graph change together at the same rate. There may or may not be a causal relationship between the tw variables: both could be related to a third variable which is not part of the graph.
The label on the y-axis or vertical axis.
The legend of a graph typically explains what each bar or line represents. The legend is usually located either above, below, or to the side of the graph. It uses colors, symbols, or patterns to match each element to its corresponding label.