Translate the Statement of Variation into an Equation and Use $D = \frac { k w } { l }$

Multiple Choice

Translate the statement of variation into an equation and use k as the constant of variation. D varies jointly as l and w .

A) $D = \frac { k w } { l }$
B) l = k Dw
C) D = k lw
D) D = lw
E) $D = \frac { k } { l w }$