Answer:
The range is (-3,3)
Explanation:
Range Of A Function from the Graph
The range of a function is the set of all those values it can take when x takes every possible element from the domain.
When the graph is given, the range can be obtained by placing an imaginary horizontal line from values of y as small as possible to values of y as high as possible. If the imaginary line passes through the graph of the function, then that value of y belongs to the range.
When we apply this approach, the line crosses the graph from y=-3 to y=3. The endpoints are not included because they have open circles there. Thus, the range is (-3,3)