Asked by ThatImNeverChangingWhoIAm

Find the constant of variation, K,for y = -8 varies directly when x = 12.

Write an inverse variation to model the situation and answer the question. Two rectangular fields have the same area. One measures 75yd by 60yd. If the other has a length of 75yd, what is its width?

Answered by Steve
we know that y=kx, so use that with the known values of x and y:

-8 = k*12
k = -2/3

The area is Width*Length. So,
WL=k
That means you want W such that
75W = 75*60
W=60
Huh? If the length of both fields is the same, where's the difficulty? I suspect a typo
Answered by tisky
^^^
think they got a bit confused. variation is just y÷x, or in this case (-8)÷12=-2/3
Answered by tisky
oops nvm, i read it wrong and didn't realize there were two questions
Answered by lil_bb
K= -2/3
-8/12=-2/3
Y=(-2/3)x
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