Which set of ordered pairs in the form of (x, y) does not represent a function of x? (1 point)
{(1, 1.5), (2, 1.5), (3, 1.5), (4, 1.5)}
{(0, 1.5), (3, 2.5), (1, 3.3), (1, 4.5)}
{(1, 1.5), (–1, 1.5), (2, 2.5), (–2, 2.5)}
{(1, 1.5), (–1, –1.5), (2, 2.5), (–2, 2.5)}

Question

Which set of ordered pairs in the form of (x, y) does not represent a function of x?  (1 point)
{(1, 1.5), (2, 1.5), (3, 1.5), (4, 1.5)}
{(0, 1.5), (3, 2.5), (1, 3.3), (1, 4.5)}
{(1, 1.5), (–1, 1.5), (2, 2.5), (–2, 2.5)}
{(1, 1.5), (–1, –1.5), (2, 2.5), (–2, 2.5)}

mertsj · Answer

A function is a set of ordered pairs in which no two ordered pairs have the same first number.

anonymous · Answer

the second one because X can have multiple Ys and Xs can't repeat to be a function