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Which function has an inverse that is also a function?
{(-1, -2), (0, 4), (1,3), (5, 14), (7,4)}
{(-1,2), (0, 4), (1,5), (5, 4), (7, 2)}
{(-1, 3), (0, 4), (1, 14), (5, 6), (7, 2)}
{(-1, 4), (0, 4), (1, 2), (5,3), (7, 1);

Respuesta :

The third one is correct. A function does not repeat x values. So if it asks the inverse you would have to see if the y values repeat. The third choice is the only one that has non repeating y values.

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