Posted by mike on Sunday, December 18, 2011 at 9:19pm.
use the graph of the function f to find f(4), f(3), and f(2)

algebra  MathMate, Wednesday, December 21, 2011 at 9:30am
We do not see the graph, so we're unable to find f(4), etc.
On the other hand, with the graph in hand, you could look up 4 in the xaxis, go vertically until you hit the curve then go horizontally to find the corresponding value for y, which equals f(4) in this case.