Question

Which set of ordered pairs does NOT represent y as a function of x? A. {(4, 5), (5, 6), (6, 7), (7, 8)} B. {(2, 5), (3, 1), (4, 1), (5, 7)} C. {(4, 6), (6, 4), (4, 5), (5, 4)} D. {(-3, -2), (-5, -2), (-7, -2), (-12, -2)}

Answer 1

C.

The x values are never the same