39.6k views
2 votes
If y varies inversely as x find the constant of variation and that inverse of variation

Y=120 when x=7

User Figolu
by
9.0k points

1 Answer

2 votes

\bf \begin{array}{llllll} \textit{something}&&\textit{varies inversely to}&\textit{something else}\\ \quad \\ \textit{something}&=&\cfrac{{{\textit{some value}}}}{}&\cfrac{}{\textit{something else}}\\ \quad \\ y&=&\cfrac{{{\textit{k}}}}{}&\cfrac{}{x} \\ &&y=\cfrac{{{ k}}}{x} \end{array}\\\\ -----------------------------\\\\ \textit{now, we know that } \begin{cases} y=120\\ x=7 \end{cases}\implies 120=\cfrac{k}{7}

solve for "k", to find "k" or "constant of variation"
User Franz Noel
by
8.0k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.