Question

Which of the following relations DOES NOT represent y as a function of x? I. {(2,8), (8,5), 8,-2), (0,8)} II. {(1,9), (8,0), (9,2), (10,-5)} III. {(1,2), (8,2), (-8,2), (7,2)} IV. {(3,9), (7,3), (8,0), (3,-5)}

Answer 1

IV. {(3,9), (7,3), (8,0), (3,-5)}

Explanation:

this is because the x-values are the same in (3,9) and (3,5) which means that relation does not represent a function.