# Chapter 1 - Section 1.1 - Algebraic Expressions, Real Numbers, and Interval Notation - Exercise Set - Page 13: 69

$\left\{x|-3 \le x \le 1\right\}$ Refer to the attached image for the graph.

#### Work Step by Step

A bracket on the left means that $-3$ is included in the set. A bracket on the right means that $1$ is included in the set. Therefore, the set-builder form of the given interval is: $\left\{x|-3 \le x \le 1\right\}$ To graph the interval, plot a solid dot at $x=−3$ and a solid dot at $x=1$, andthen shade the region between them. (refer to the attached image in the answer part for the graph)

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