I'm not exactly well versed in Excel beyond the basics, so you'll have to excuse me if I'm off with the terminology or my description is vague. Basically, I've made a scatter chart for some data, let's call them x1 and y1. I've included a trend line. What I would like to do is to include a set of values, x2, so that they are plotted on the graph already made before on the trend line. Possible?