Sara walks from her home to the store. Halfway to the store, she realizes that she forgot to bring money, so she returns around, returns home, gets her money, and then walks all the way to the store. Graph time on the horizontal axis and distance on from home on the vertical axis.

What is the major advantage of using C-V-P graphs

How does one show an explanation as of how a market demographic cahnge in market graphically? I'm confused as of what type of graph to use and how to do it. Can someone please help? Thanks.