# Chapter 8 - Section 8.4 - Nonlinear Inequalities in One Variable - Vocabulary, Readiness & Video Check: 4

$(-\inf, -8]$

#### Work Step by Step

Since this graph has an arrow pointing to the left, the interval "starts" at negative infinity. Infinity is a concept, not a number, and so it cannot be included in the solution set. Therefore a parenthesis is used. The solution start ends at $-8$, and includes $-8$, so the right side of the notation has a bracket.

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