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Which relation is a function?

Which relation is a function?-example-1
User JGrubb
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2 votes

Answer:

A.

Explanation:

If you use the vertical line test only one point hits the graph.

User Marc Sherman
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Using the vertical line test:

If you can draw a vertical line and it crosses the graphed line more than once, or multiples dots on the same line it is not a function.

The first graph is a function.

User Blahy
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