Question

Please help me with this thank you

Answer 1

D

Explanation:

You want to know which graph shows a relation that is a function.

Function

A relation is a function if there is only one output for each input. This means the graph must not have two or more points on any vertical line.

A

There area two points on the vertical line x = 0 (the y-axis). Not a function.

B

There are two points on the vertical line x = 2. Not a function.

C

There are two points on the vertical line x = -1. Not a function.

D

There is no vertical line that intersects two points. This relation is a function.

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