Really need help making a graph!

Jan 9, 2007
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I have tried and tried and just cannot figure out how to do this, or where to get any answer. Would greatly appreciate guidance on how to do this, or on where I can find the guidance:

I need to plot a graph, displaying several sets of data. For example, a line as a number of points on an xy axis, in one colour. Then another line in another colour, on the same graph, and so on. Several such lines, each having many points.

Actually this is really really basic! Very basic! But I cannot work out how to do it! I have Plot. If you know how to do this, I would really appreciate help! I can make one line fine. But I don't know how to change the line colour, and how to get a number of lines, nor how to select their colours.

Also if you have another program in mind I am open to suggestions.

Thank you!

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