Algebra-1

To determine if the graph represents a function, we can apply 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 < -4 ), the graph is a gradually increasing straight line.

For (

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