text: ## Intermediate Algebra (12th Edition)
  
  $\text{ NOT a function }\\\text{Domain: } (-\infty, 0] \\\text{Range: } (-\infty,\infty)$
  $\bf{\text{Solution Outline:}}$ Use the vertical line test to determine if the given graph is a function. The domain is the set of $x$-values and the range is the set of $y$-values. $\bf{\text{Solution Details:}}$ A vertical line drawn at $x=-1,$ will intersect the graph in more than $1$ point. Hence, the given graph is not a function The $x$-values used in the graph are all numbers less than or equal to $0.$ The $y$-values used in the graph are all real numbers. Hence, the given set has the following characteristics: \begin{array}{l}\require{cancel} \text{ NOT a function }\\\text{Domain: } (-\infty, 0] \\\text{Range: } (-\infty,\infty) .\end{array}
metadata: {"found_math": true, "script_math_tex": 0, "script_math_asciimath": 0, "math_annotations": 0, "math_alttext": 0, "mathml": 0, "mathjax_tag": 0, "mathjax_inline_tex": 1, "mathjax_display_tex": 0, "mathjax_asciimath": 0, "img_math": 0, "codecogs_latex": 0, "wp_latex": 0, "mimetex.cgi": 0, "/images/math/codecogs": 0, "mathtex.cgi": 0, "katex": 0, "math-container": 0, "wp-katex-eq": 0, "align": 0, "equation": 0, "x-ck12": 0, "texerror": 0}