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Line Graphs are used to display quantitative value over a continuous interval or time span. It is most frequently used to show trends and relationships (when grouped with other lines). Line Graphs also help to give a "big picture" over an interval, to see how it has developed over that period.
Line Graphs are drawn by first plotting data points on a Cartesian coordinate grid, then connecting a line between these points. Typically, the y-axis has a quantitative value, while the x-axis has either a category or sequenced scale. Negative values can be displayed below the x-axis.
Data over time
Tools to Generate Visualisation