If Y Varies Inversely as X, Find the Inverse Variation $y = \frac { 1 } { 9 } \text { when } x = 18$

Multiple Choice

If y varies inversely as x, find the inverse variation equation for the situation.
- $y = \frac { 1 } { 9 } \text { when } x = 18$

A) $y = \frac { 1 } { 2 x }$
B) $y = \frac { x } { 2 }$
C) $y = \frac { 2 } { x }$
D) $y = \frac { 1 } { 162 } x$