Answer:
f(5)=-1
Explanation:
We can see that in the graph, when x=5, the function is interrupted. That means that this is not a continuous function. We can also analyze that when x=5, the function can have two possible values: one is circled in white (y=3), and the other one is blue (y=-1).
The fact that y=3 is circled in white, tells us that said point is not included on the function's domain. And when the point is blue, that means that said point does belong on the function's domain. So y=-1 belongs, but no y=3.
So the right answer is that when f(5)=-1