On Fri, 27 Apr 2007, in microsoft.public.excel.charting,
F. Lawrence Kulchar said:

I have created a line chart with the x and y axes.
The x axis ranges from -10 to +10.

This is exactly a graphing problem in math!

How can I make a vertical line appear, such as x=1???

Line chart types are not well suited to doing mathematical graphing. Use
an XY chart type instead.

--
Del Cotter
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