Which of the following will result in a rational answer? multiplying pi by a fraction, adding the square root of a non perfect square to a whole number , adding the square root of a perfect square to pi , multiplying a fraction by a repeating decimal.

Multiplying a fraction by a repeating decimal since a fraction is rational and a repeating decimal is rational (repeating numbers will always be rational).  Rational number time rational number=rational Pi is an irrational number since the numbers are not repeating (3.1415926535 no repeating numbers as opposed to 0.3333333333333333333 or 0.1919191919)

one that is bigger than 3 1/2

it has the same slope and a different y-intercept

hope this : )