Posted by Lori on Tuesday, August 17, 2010 at 7:34pm.
Find the variation constaant and an equation of variation where Y varies directly as X and Y = 72 hen X = 8
The variation constant is K = ?
The equation of variation is Y = ?
I think that K = 9 but not sure
I don't have a clue about the rest.

algebra  Reiny, Tuesday, August 17, 2010 at 7:58pm
"Y varies directly as X" > y = kx
but we are given x=8, y = 72
72 = k(8)
k = 9, so
y = 9x
all done!

algebra  Lori, Tuesday, August 17, 2010 at 8:01pm
Thank you, I thought I was on the right track but wasn't sure.

algebra  abule, Monday, February 22, 2016 at 12:51am
solution:
y=kx
72=k(8)
72/8=k
9=k
so 9 is our constant...
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