Find an Equation of Variation in Which the Following Are $x$

Multiple Choice

Find an equation of variation in which the following are true.
- $x$ varies inversely as $y ^ { 2 }$ , and $x = 10$ when $y = 16$ .

A) $x = \frac { 1 } { - 6 y ^ { 2 } }$
B) $x = 2560 y ^ { 2 }$
C) $x = \frac { 1 } { 2560 y ^ { 2 } }$
D) $x = \frac { 2560 } { y ^ { 2 } }$