Algebra-1

We can determine if the graph represents a function by applying the vertical line test.

Vertical Line Test:  

1.If any vertical line intersects the graph at more than one point, then the graph does not represent a function.  

2.If every vertical line intersects the graph at exactly one point wherever it touches the graph, then the graph represents a function.

Analysis of the graph:

For x < -3, the graph is a horizontal line, which means it has a single y-value for all x-values less than -3.

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