Find an equation of variation in which $y$ varies inversely as $x$ and the following is true.
-$y=7$, when $x=12$
A) $y=\frac{84}{x}$
B) $y=\frac{0.58}{x}$
C) $y=84 x$
D) $y=\frac{19}{x}$

Question

Quizplus · Accepted Answer

In an inverse variation, $y = \frac{k}{x}$, where $k$ is the constant of variation. Given $y=7$ when $x=12$, we find $k$ by multiplying $7 \times 12 = 84$. Thus, the equation is $y = \frac{84}{x}$.

Find an Equation of Variation in Which yyy Varies Inversely As xxx

Find an Equation of Variation in Which $y$ Varies Inversely As $x$