You are on the Home/Excel/Add-Ins/Excel Utilities/Graphing
Calculator page Web This Site  Graphing Calculator - Interactive
graph analyzer  To skip the documentation and immediately
download the add-in:  Download the the zip version.  Works with
Excel 2000 (or later) only.   This add-in implements an
interactive graph creator and analyzer.  It lets one visually
examine how various cells affect an Excel formula.  Since it
uses the contents of one or more Excel cells, the program is not
limited to plotting graphs with known equations but the content
of anything that can be put in an Excel cell!  Figure 1  The
values in the cells that affect the plotted cells can be changed
through the controls on the userform, which, of course, is
customized to the graph currently being analyzed.     Start by
downloading the zip version.  Unzip the add-in file to a
directory of your choice.      Using the add-in  Access the
dialog box with TM | Charts > Interactive graph analyzer...  The
top part of the user form defines what i