5. We havent discussed plotting yet, but lets try out a few very simple exercises. You can paste the plots into your word file directly. a. Try out plot(2,4). What does this do (you may have to squint)? Now try (plot(2,4, '*'). b. Try plot(rand(10,1)). What do you think is happening? c. You can use the command help plot to find formatting tips, for example, you can try plot(rand(10,1),'r--d'). What do you think the r, --', and d do to the format?