## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$\text{Set Builder Notation: } \{x|x\lt-1\} \\\text{Interval Notation: } (-\infty,-1)$
The given graph shows all the numbers that are less than $-1.$ Hence, the given graph of inequality can be described in the following formats: \begin{array}{l}\require{cancel} \text{Set Builder Notation: } \{x|x\lt-1\} \\\text{Interval Notation: } (-\infty,-1) .\end{array}