how does a double line graph looks

A double line graph, also known as a dual line graph, is a type of graph that displays two different sets of data using two separate lines on the same graph. This allows for easy comparison and analysis of the two datasets over a common period of time or axis.

To create a double line graph, follow these steps:

1. Identify the two sets of data that you want to compare. For example, you might want to compare the sales revenue of two different products over a span of months.
2. Choose a suitable graph paper or software to plot your data. Graphing software such as Microsoft Excel or Google Sheets can be helpful.
3. Label your axes. The horizontal axis, also known as the x-axis, represents the common period or axis of comparison, such as time intervals (months, years, etc.). The vertical axis, also known as the y-axis, represents the numerical values of the data being compared (e.g., sales revenue in dollars).
4. Plot the data points for each dataset on the graph. For example, if you have sales revenue data for Product A and Product B for each month, plot the corresponding revenue values for each product on the graph.
5. Connect the data points for each dataset with separate lines. Each line represents one dataset. Use different colors or line styles (e.g., solid and dashed) to differentiate between the two lines. For example, you could use a solid line for Product A and a dashed line for Product B.
6. Add a legend or key to the graph, explaining which line represents which dataset.
7. Add a title to the graph to provide context, such as "Monthly Sales Revenue Comparison: Product A vs. Product B."

By following these steps, you can create a double line graph that displays two sets of data and allows for easy comparison and analysis.