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2-9.

Which of the relations below are functions? Justify your answer. Homework Help ✎

  1. graph a

    Do all of these graphs have one output value for every input value?

  1. graph b

  1. graph c

  1. For each graph above, state the domain and range.

  • The domain of a graph is its possible -values.

    All real numbers.

    The range of a graph is its possible -values.