Question

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

Answer 1

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.

Answer 2

It's C, because the graph passes the vertical line test.