Question

Which set of ordered pairs represents y as a function of x? O {(-8,3), (0,7), (2,-4), (-3,7)} O {(-4,0), (-1,3), (-9,-3), (-4,-8) {(5,2), (-3,-2), (5,1), (-3,1)} O {(7,3), (5,6), (2,2), (5,3)}

Answer 1

To be y a function of x, we only need to have only one y ( no repetitions) in the ordered pairs for each x. Then, we have that:

In the first set of ordered pairs: y is not a function (7 is repeated for x = 0, and x = -3).

Second set: it is a function.

Third set: no function.

Fourth set: no function.

The only pair is the second set {(-4, 0), (-1, 3), (-9, -3), (-4, -8)}.