Does the table show y as a function of x?

• Yes, it is a function.

• No, it is not a function

Does the table show y as a function of x?

• Yes, it is a function.

• No, it is not a function

Match the relations with their domain and range.

• D: {-4, 3, 5, 7}

  R: {4, 14, 32}

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• D: {-7, -2, 0, 5}

  R: {-9, -4, -1}

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• D: {-5, -3, 3}

  R: {-5, -2, 5}

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• D: {-2, -1, 0, 1, 2}

  R: {-2, -1, 0, 1, 2}

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• D: {-1, 0, 2, 7}

  R: {-2, 1, 4, 7}

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Which tables show y as a function of x?

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Which set of ordered pairs represents y as a function of x?

• {(−9, 2), (0, 6), (1, −2), (−3, 6)}

• {(−1, 0), (4, 3), (−7, −3), (−1, −8)}

• {(3, 2), (−4, −2), (3, 1), (−4, 1)}

• {(5, 4), (2, 3), (1, 1), (2, 4)}

The mapping below represents y as a quadratic function of x.

Which representation shows the same relationship between x and y?

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Which representation does not show y as a function of x?

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Which tables do not represent y as a function of x?

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Which graph does not represent y as a function of x?

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Is the relation a function? Why?

• Yes, because the x-value 11 has two y-values paired with it.

• Yes, because each x-value has only one y-value paired with it.

• No, because the x-value 11 has two y-values paired with it.

• No, because each x-value has only one y-value paired with it.