If y varies directly as x, and y=-4 when x=8, find y when x=3

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

When you answer this can you explain

Circle d circumscribes abc and abe. which statements about the triangles are true? statement i: the perpendicular bisectors of abc intersect at the same point as those of abe. statement ii: the distance from c to d is the same as the distance from d to e. statement iii: bisects cde. statement iv: the angle bisectors of abc intersect at the same point as those of abe. a. i only b. i and ii c. ii and iv d. i and iii e. iii and iv