In each of the following, a variation relationship is given. Find the requested value of the function in each.

a. y = 3x when x = 2

b. y = –2⁄ x when x = 16

c. y = ––3⁄ x2 when x = –3

d. y = 14x2 when x = 100

e. y = –2x when x =.4

f. y = 6/7x2 when x= 3