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4-28.

Examine the graphs of each relation below. Decide if each is a function. Then describe the domain and range of each. Homework Help ✎

  1. graph a

  • Is there more than one output value for a single input value? If so, it is not a function.

    Determine the possible -values to find the domain and the possible -values to find the range.

    It is not a function.
    R:

  1. graph b

  • Is there more than one output value for a single input value? If so, it is not a function.

    Determine the possible -values to find the domain and the possible -values to find the range.

    It is a function.
    D: