Write an Equation That Expresses the Relationship $g$ Varies Inversely As $y$

Multiple Choice

Write an equation that expresses the relationship. Use k as the constant of variation.
- $g$ varies inversely as $y$ .

A) $g = \frac { k } { y }$
B) $g = \frac { y } { k }$
C) $g = k y$
D) $\mathrm { kg } = \mathrm { y }$