Question 548911
I hope you have a graph to go along with this question?

Okay, so f(x) is really just the y value at the given x value.  
For example, if I have a point (3,5) on a function f(x), then we can say that f(3)=5.   (Notice that a function must past the vertical line test to be considered a function, so there will only be one answer as for every x value there is only one y value)


So for this question.  To find f(-4), look at your graph and see what is the y value when x=-4.  
(and do the same thing for the other two as well)


Hopefully this helps:)