Common Core End-of-Course Assessment - Page 796: 34

H

A function does not exist when one input (x-value) yields two outputs (y-values). In this problem, we see that in answer H, there are the points (1, 10) and (1, 100). For a function, the input 1 cannot yield two outputs, 10 and 100, so we obtain that option H does not represent a function.