Does the equation -2x+y=0 a direct variation? if so, identify the constant of variation. not a direct variation(dv) dv; k=1/2 dv; k=0 dv; k=2

Which segments are congruent? o jn and ln o jn and nm o in and nk onk and nm

Is a positive integer raised to a negative power always positive

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?