SOLUTION: The instructions states that y varies inversely with x, use the specified values to write an inverse variation equation that relates x and y, then find y when x=18. The questions

Algebra ->  Inverses -> SOLUTION: The instructions states that y varies inversely with x, use the specified values to write an inverse variation equation that relates x and y, then find y when x=18. The questions       Log On


   



Question 337473: The instructions states that y varies inversely with x, use the specified values to write an inverse variation equation that relates x and y, then find y when x=18. The questions are x=6,y=9 and x=2/3,y=12, how do i find the answers to these questions and what is a inverse variation equation?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
There is direct variation, where y=kx
and there is inverse variation, where y=k%2Fx or xy=k
So then solve for each k.
xy=k
6%2A9=k
k=54
xy=54 or y=54%2Fx
Complete the second one the same way.