Which statement is true about this equation y=-3x^2+4 A. it represents a relation only
B. it represents neither a function nor relation
C. it represents a function only
D. it represents both a relation and a function

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?