Determine if Set of Points is a Function: Which set of ordered pairs does not represent a function: {(−2,5),(0,−9),(8,−2),(7,4)}, {(−3,4),(−5,4),(7,−3),(2,−9)}, \{(2, -9), (-5, -1), (-6, -3), (-5, 7)\}, {(1,−8),(−9,−2),(−4,0),(4,−8)}