Question

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

Explanation:

Step1: Define domain

The domain of a relation or function is the set of all possible x - values. Looking at the grid, assuming the grid extends infinitely in the horizontal (x - axis) direction, the domain is all real numbers. In interval notation, it is $(-\infty,\infty)$.

Step2: Define range

The range of a relation or function is the set of all possible y - values. Assuming the grid extends infinitely in the vertical (y - axis) direction, the range is all real numbers. In interval notation, it is $(-\infty,\infty)$.

Answer:

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