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Does this graph represent a function? Why or why not?

AYes, because it passes the vertical line test.
BNo, because it is not a straight line.
CNo, because it fails the vertical line test.
DYes, because it has two straight lines.

Does this graph represent a function? Why or why not? A. Yes, because it passes the vertical line test. B. No, because it is not a straight line. C. No, because class=