(4, -1) and Y=-5x -3 write the equation for a line that is perpendicular to the given line and passes through the point given ​

Geometry answer picture question pls . reason and statements

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?

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?