If y is inversely proportional to x , and $y = \frac { 1 } { 80 }$ when x = 80, find the value of y when x = 30.
A) $y = \frac { 1 } { 26 }$
B) $y = \frac { 1 } { 29 }$
C) $y = \frac { 1 } { 36 }$
D) $y = \frac { 1 } { 30 }$
E) $y = \frac { 1 } { 40 }$

Question

Quizplus · Accepted Answer

Since y is inversely proportional to x, we have $y = \frac{k}{x}$, where k is the constant of proportionality. Given $y = \frac{1}{80}$ when $x = 80$, we find $k = 1$. Thus, when $x = 30$, $y = \frac{1}{30}$.

If Y Is Inversely Proportional to X , And y=180y = \frac { 1 } { 80 }y=801​

If Y Is Inversely Proportional to X , And $y = \frac { 1 } { 80 }$