Find an equation of variation in which $y$ varies inversely as $x$ and the following is true.
-$y=0.625$, when $x=8$
A) $y=5 x$
B) $y=\frac{5}{x}$
C) $y=\frac{8}{x}$
D) $y=\frac{6}{x}$

Question

Quizplus · Accepted Answer

In an inverse variation, $y = \frac{k}{x}$, where $k$ is the constant of variation. Given $y=0.625$ when $x=8$, we find $k$ by multiplying $y$ and $x$, giving $k = 0.625 \times 8 = 5$. Thus, the equation is $y = \frac{5}{x}$.

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

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