Answer the Question
-Suppose Z Varies Directly as X and Inversely

Multiple Choice

Answer the question
-Suppose z varies directly as x and inversely as the square of y. If x is doubled and y is tripled, what happens to z?

A) $\mathrm { z }$ is one-sixth as large as before
B) z is multiplied by $\frac { 1 } { 18 }$
C) $z$ is six times as large as before
D) $z$ is multiplied by $\frac { 2 } { 9 }$