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9th grade

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I am having trouble trying to figure out how to work this problem:
Determine if each relation is a function.

1. Relation: (-2,2),(3,2,),(4,-1),(5,-2)
How do i do this???????

  • 9th grade -

    i am having the same trouble too. i think if the x points are different, the its a function. but if not, then its not a function.

    seeking for help also :)

  • 9th grade -

    By definition, it is a function.

    Have you learned about the Vertical Line Test?

    Here is a short video that explains it.
    Too bad that the guy is sort of dry in his explanation.

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