Write an equation of a line that is a dilation of the line , centered at the origin, with a scale factor of 4. Please write your final answer in y=mx+b form (slope-intercept form of a line).

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?