Evaluating Functions Given their Graph
We are given the graph of the function f(x). We are required to find:
* f(0)
To find the value of f when x=0, we draw an imaginary vertical line that passes through x=0. The point where the graph of the function and our imaginary line meet corresponds to f(0). From the graph, it's apparent that:
f(0)=1
* The value of x such that f(x) = -3
For this part, we draw a horizontal imaginary line passing through y=-3. We can see the graph and the line meet in two points: one where x=-4 and the other where x=4.
Thus:
f(-4) = -3
f( 4) = -3
