Question

1. domain: ( ) ( ) range: ( ) ( )

Explanation:

Step1: Identify domain concept

The domain of a function is the set of all possible x - values. Looking at the graph, the line extends infinitely to the left and right. So, the x - values can be any real number.

Step2: Identify range concept

The range of a function is the set of all possible y - values. Since the line extends infinitely up and down, the y - values can be any real number.

Answer:

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