Which set of ordered pairs in the form of (x,y) does NOT represent a function of x?
A) {(-1,2),(3,-2), (0,1), (5,2)}
B){(-1,2),(3,2),(-2,2),(0,2)}
C){(-1,2),(3,-2),(0,1),(3,5)}
D){(-1,2),(2,3),(3,-2),(-2,0)}

Question

Which set of ordered pairs in the form of (x,y) does NOT represent a function of x?
A) {(-1,2),(3,-2), (0,1), (5,2)}
B){(-1,2),(3,2),(-2,2),(0,2)}
C){(-1,2),(3,-2),(0,1),(3,5)}
D){(-1,2),(2,3),(3,-2),(-2,0)}

anonymous · Answer

A function is a relation for which each value from the set the first components of the ordered pairs is associated with exactly one value from the set of second components of the ordered pair.

For example, each y output comes from a unique x input. If you have 2 values of x that are the same, that cannot be a function.

anonymous · Answer

Okay thank you so much! you really broke it down, and made it easy to understand! so C would be the correct answer because there are 2 x values.

anonymous · Answer

Yes. :)