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:

• Match each figure to one of the original functions, labeling each y = x^2, y = x, y = 2^x or y = sqrt(x). 
• For each figure show where you would put the x axis, the y axis, and how you would label the scale so your figure matches the function you choose.