the graph of a function f is shown below.
if you would like to enlarge the graph or make numbers and letters easier to read, you may click on it to
open it in a new window. you may then enlarge that window with your mouse. to further enlarge the image,
use your browser's zoom capabilities. on a pc this is usually ctrl shift + (and zooming out is ctrl on an
apple computer this is usually apple shift + (and zooming out is apple