Suppose that \(x\) is inversely proportional to \(b\). If \(x=-3 \) when \(b=-6\), find \(x\) when \(b=8 \). Express your answer as a fraction.
If x and b are inversely proportional, the product is constant.
From x=-3 when b=-6,
xb=18
Sub in b=8
x=18/8=9/4