Find an equation of variation in which y varies inversely as x and the following is true.
-$$y = 0.3 \text {, when } x = 0.4$$
A) $y = \frac { 0.7 } { x }$
B) $y = \frac { 0.12 } { x }$
C) $y = 0.75 x$
D) $\mathrm { y } = \frac { 0.75 } { \mathrm { x } }$

Question

Quizplus · Accepted Answer

For inverse variation, the equation is $y = \frac{k}{x}$, where $k$ is the constant of variation. Given $y = 0.3$ when $x = 0.4$, we find $k$ by multiplying $y$ and $x$, giving $k = 0.3 \times 0.4 = 0.12$. Thus, the equation is $y = \frac{0.12}{x}$.

Find an Equation of Variation in Which Y Varies Inversely y=0.3, when x=0.4y = 0.3 \text {, when } x = 0.4y=0.3, when x=0.4

Find an Equation of Variation in Which Y Varies Inversely $y = 0.3 \text {, when } x = 0.4$