Yes it was a scatter plot with Excel.
I have no idea how you could add the names though.
It would be a lot easier just to do it by hand although I guess you could do the graph with excel and add the names by hand afterwards.
If I personally was going to do it as an assignment I would probably try to construct it using GeoGebra (which is a free dowload)
I really enjoy using Geogebra, but if you have never used it before it will probably be too hard to do this. It is a great program but I remember it took me a while to get the hang of it.