If y varies inversely as x, find the inverse variation equation for the situation.
-$y = 7$ when $x = 3$
A) $y = \frac { 7 } { 3 } x$
B) $y = \frac { 1 } { 21 x }$
C) $y = \frac { x } { 21 }$
D) $y = \frac { 21 } { x }$

Question

Quizplus · Accepted Answer

Inverse variation is described by the equation $y = \frac{k}{x}$, where $k$ is a constant. Given $y = 7$ when $x = 3$, we find $k = 7 \times 3 = 21$, thus the equation is $y = \frac{21}{x}$.

If Y Varies Inversely as X, Find the Inverse Variation y=7y = 7y=7

If Y Varies Inversely as X, Find the Inverse Variation $y = 7$