Find the Variation Equation for the Variation Statement $y$ Varies Inversely as the Square Of

Multiple Choice

Find the variation equation for the variation statement.
- $y$ varies inversely as the square of $x ; y = 3$ when $x = 6$

A) $y = \frac { x } { 108 }$
B) $y = \frac { x ^ { 2 } } { 108 }$
C) $y = \frac { 108 } { x }$
D) $y = \frac { 108 } { x ^ { 2 } }$