What is an equation of the line that is perpendicular to y = - 3/4 x + 6 and passes through point (3, 9)?

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

What is the y-intercept of the line given by the equation

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?