Which of the following lists of ordered pairs is a function? a. (0,2), (4,2), (0,-4), (4,-2) b. (2,4), (3,9), (4,16), (5,25) c. (2,4), (-2,4), (3,9), (-2,-4) d. (1,1), (2,3), (1,5), (4,7)

A function will not have repeating x values ... all the x values have to be different. They can have repeating y values, just not the x ones.

So which list of ordered pairs has all different x values?

The answer would be : B ... because ur x values are (2,3,4,5) ... all different values.