Let
, and Find the
.
Method 1: Using the product rule.
\Product rule for inverse variations:
.
(Substitute
)
(Multiply:
)
Apply division property of equality: If a = b then
.
(Divide each side by 8)
(Cancel common terms)
(Divide:
)
Method 2: Using the proportion rule.
\proportion rule for inverse variations:
.
(Substitute
)
Apply cross product property:
.


(Divide each side by 8)

The value of
.