Is there a configuration setting anywhere in FusionCharts that would enable a regression line equation (in the form of "y = mx + b") to be displayed along with the scatter plot & graphical regression line (as is possible in Excel)? I've looked hard for this - but just don't find it. Thanks.
FusionCharts does support Regression line. Check a demo at Link
To display regression lines of all the datasets of a chart you need to declare showRegressionLine='1' in the element. You can show the regression line for a particular element declaring showRegressionLine='1' in that particular element.