Function f is graphed below. What is the domain of f? A. {x1 - 2 5 x < 4}
B. {x] -2 < x < 4}
C. {yl - 3 < y s 3}
D. {y1 - 3 sy < 3}

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?