Question

Which relation does not represent a function? A. {(3, 0)}, {(0, 3)}. B. {(6, -2), (5, -2)}. C. {(3, 4), (3, 5)} D. {(5, 5), (-5, -5)}. E. {(1, -2), (-2, 1)}

Answer 1

A function will not have repeating x values...all the x values will be different. But u don't want a function...so u want repeating x values.
That leaves C...because u have repeating x values (3 is ur repeating x value)...so C is not a function