The function is .

Graph the linear function for .

Substitute the value of in the function .

.

Since does satisfy this inequality, began with an closed circle at and

to the left of , graph .

Graph the linear function for .

Substitute the value of in the function .

.

Since does not satisfy this inequality, began with an open circle at and

to the right of , graph .

The graph of function is

The function is defined for all values of x, so the domain is all real numbers.

The values that are y - coordinates of points on the graph are all real numbers less than or equal 2 and all real numbers greater than . So the range is .

The domain of the function is all real numbers and its range is , and its graph is