macky326
contestada

Which relation is also a function?

{(0, 3), (1, 2), (1, 4), (2, 1)}
{(-1, 3), (0, 2), (3, -1), (3, 2)}
{(2, -4), (2, -2), (2, 1), (2, 3)}
{(-4, -3), (0, -3), (1, -3), (4, -3)}

Respuesta :

luisejr77

Answer: Last option.

Step-by-step explanation:

By definition, a relation is a function if each input value (value of "x") has one and only one output value ( value of "y").

Based on this, let's check each relation:

1) {[tex](0, 3), (1, 2), (1, 4), (2, 1)[/tex]}

This is not a function, because the input value 1 has two different output values (2 and 4)

2) {[tex](-1, 3), (0, 2), (3, -1), (3, 2)[/tex]}

This is not a function, because the input value 3 has two different output values (-1 and 2)

3) {[tex](2, -4), (2, -2), (2, 1), (2, 3)[/tex]}

This is not a function, because the input value 2 has four different output values (-4, -2, 1 and 3)

4) {[tex](-4, -3), (0, -3), (1, -3), (4, -3)[/tex]}

This is a function, because each input value has one output value.

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