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1-78.

Which of the relationships below are functions? If a relationship is not a function, give a reason to support your conclusion. Homework Help ✎

  • There is more than one output value for some inputs; therefore, the relation is not a function.

  1. x

    y

    −3

    19

    5

    19

    19

    0

    0

    −3

  • It is a function. Every input had only one output even if it is the same output such as 19.

  1. x

    7

    −2

    0

    7

    4

    y

    10

    0

    10

    3

    0

  • There is more than one output value for x = 7.
    Is this relation a function?

  1. graph

  • It is a function.