Question

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

Answer 1

Answer: C

Because it fails the vertical line test.

Put a pencil vertical on the graph.

Drag it along, if there are 2 lines that touch the pencil, it fails the test.

If there's only one, it passes.

Answer 2

C) No ,the graph fails the vertical line test.

Explanation:

The vertical line test helps us determine if the given graph is a function or not.If for one value of x there is only one value of y then the graph is a function.

If we draw vertical lines and if the line crosses the graph at one point only then the graph is a function.

If vertical lines are drwn on the given graph it touches the graph at two points and hence fails the vertical line test .The graph is not a function.

Option C is the right answer.