The equation of line qr is y= -1/2x +1. write an equation of a line perpenicular to line qr in slope intercept form that contains point (5,6)

a) y=2x+16

b) y= -1/2x +17/2

c) y= -1/2x +7/2

d) y=2x - 4

i need the right answer!

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- 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. 3- 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 part b?