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.

True PowerPoint Warriors know that you can -- with Herculean levels of effort -- animate charts and graphs in PowerPoint. Of course, not many people do it, because it's just not that easy to do ...

You can change the default color of chart, graph, treemap, etc. in Word, Excel, and PowerPoint with the helpof these simple steps.