Line of fit graph builder

[#1]

I am trying to show line of fit in graph builder for several sets of data. I want to show line of fit for each set induvidually as well as average for all 3. 

I can turn on and off overlay for the variables but is there any way to get this all in the same graph? 

[#2 · Accepted solution]

You can "cheat" and use the "copy frame contents" feature. Build your two plots as you show. On the plot with just the average line remove the points so you just have the line. In that plot, right click and "copy frame contents". In your grouped plot right click and "paste frame contents".