Does this graph show a function? explain how you know.

ANSWER

C. Yes; the graph passes the vertical line test.

EXPLANATION

The quickest way to determine whether a graph represents a function or not is to perform the vertical line test.

If the graph passes the vertical line test, the graph represents a function.

If we draw vertical line across the graph in the attachment, it will touch the graph at one and only one point.

Since the graph passes the vertical line test, it represents a function.

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