Equation through (-1,4) and perpendicular to 3y=2x-1

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

What is the upper quartile in the box plot?

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?