matching basic graphs

You previously sketched graphs of y = x^2, y = x, y = 2^x and y = sqrt(x) in the assigment basic graphs.  If you don't have your copy handy, go back and redo that assignment.  Having done it once you should be able to redo it in just a few minutes.

When you did your graphs, you chose your own scale for each one.

Each of the figures below contains three points on one of the four basic graphs, sketched to some unspecified scale.  The positions of the x and y axes are not indicated on these graphs. 

Do the following: