The range of the function in the graph is:
-3 < y ≤ 3
What is the range of the function in the graph?
For a function y = f(x), the range is the set of the possible outputs, this is, the possible values of y.
To identify the range of the function in the graph, we need to look at the vertical axis.
The lowest value in the graph is y = -3 (with an open circle, which means that it does not belong to the range)
The largest value is y = 3 (with a closed circle, which means that it does belong to the range)
Then the range is:
-3 < y ≤ 3