Question

1. domain: ( ) range: ( )

Explanation:

Step1: Identify domain concept

The domain of a function is the set of all possible x - values. Since the graph extends infinitely to the left and right along the x - axis, all real numbers are included.

Step2: Identify range concept

The range of a function is the set of all possible y - values. The graph extends infinitely up and down along the y - axis, so all real numbers are included.

Answer:

Domain: $(-\infty,\infty)$
Range: $(-\infty,\infty)$