To animate a line graph in PowerPoint, you need to open the slide, draw the Graph add the labels and then animate the graph as explained here.

How to Add Two Lines to a Powerpoint Chart. "Presenters are usually guilty of including too much data in their on-screen charts," says Garr Reynolds, author of Presentation Zen.

PowerPoint presentations with multiple sequential graphs, such as monthly results each on a separate slide, tax viewers' short-term memory, preventing them from absorbing the results. Beth Lisberg ...