Work out 4 1/2 - 1 1/3

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

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?

Asequence is a function whose is the set of natural numbers