Question

Which relation is also a function? A, B, C, or D?

Answer 1

Answer:

AorD

srry if im wrong its not B because some of them are not compatible

Step-by-step explanation:

Answer 2

Answer: Choice D

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Explanation:

To have a function, we cannot have repeated x values. Put another way, we can't have any input go to more than one output. Choices A through C are not functions because....

• Choice A has x = 10 go to more than one y output.
• Choice B has x = 2 go to more than one y output.
• Choice C has x = 4 go to multiple y outputs.

Only choice D has each x value listed one time. We don't have any repeated x values. Any x input leads to exactly one y output. This is why choice D is a function.