Suppose that a is inversely proportional to b. If a = 6 when b = 3, find a when b = 8. Express your answer as a fraction.
a = k / b, where k==constant of proportionality.
6 = k/ 3, solve for k
k ==3 x 6 ==18
a==k / b
a == 18 / 8 ==9 /4
