Write an equation to describe the variation. Use k for the constant of proportionality.
-$P$ varies jointly as $R$ and $S$.
A) $P + R + S = k$
B) $P = k R S$
C) $\mathrm { P } = \mathrm { k } + \mathrm { R } + \mathrm { S }$
D) $\mathrm { PRS } = \mathrm { k }$

Question

Quizplus · Accepted Answer

Joint variation means that $P$ is directly proportional to both $R$ and $S$, which is correctly represented by the equation $P = kRS$.

Write an Equation to Describe the Variation PPP Varies Jointly As RRR

Write an Equation to Describe the Variation $P$ Varies Jointly As $R$