1) which set of ordered pairs in the form of (x, y) does not represent a function of x?

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

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

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

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

Basically, x never reats with a different y

(x, y)

A is a fn of x since x never repeats

B is a fn of x since x never repeats

C is a fn of x since x never repeats

D is not since we have (1,2) and (1,-2) so this is the answer

answer is D