how to plot multiple lines in a graph for same axis.

how to plot multiple lines in a graph with same x axis and y axis. How the range (starting,ending points and a constant difference between each point) of x-axis and y-axis is defined.

[Christopher Creutzig]

I'm not sure I understand your problem. It might help to show what you've tried so far, or possibly edit your question to include a picture sketch of what you would like to achieve.