Observe the graph:

Closed circle means the end point is included and open circle means end point is not included.

All possible values of $\"\"$ is domain of the function.

Domain of the function is in interval notation: $\"\"$ .

All possible values of $\"\"$ is range of the function.

Range of the function is in interval notation: $\"\"$ .

Domain $\"\"$ .

Range $\"\"$ .