Outgoing is formatted as negative numbers.<BR><BR>When graphing the data, I would like the absolute value of the outgoing monies displayed, because it more clearly shows the picture of what I'm ...

Thus {f, g} represents the unordered pair of functions f and g. So will plot both f and g on the same graph. We don't care wich order it does them in so we can give f and g as an unordered pair.