Find the Constant of Variation for the Stated Condition: Y $y = 8 \frac { 1 } { 6 }$

Multiple Choice

Find the constant of variation for the stated condition: y is directly proportional to the square of x and inversely proportional to the cube of z , and $y = 8 \frac { 1 } { 6 }$ when x = 42 and z = 36.

A) k = 6
B) k = 7
C) k = 216
D) k = 36
E) k = 49