SOLUTION: which shows direct variation? a)y=4 b)y=3x-2 c)xy=10 d)y=-4x e)x=3 I couldnt find where to put this problem its from exam review thanks! : )

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Question 196989: which shows direct variation?
a)y=4
b)y=3x-2
c)xy=10
d)y=-4x
e)x=3
I couldnt find where to put this problem
its from exam review
thanks! : )
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
which shows direct variation?
a)y=4
No variation
--------------------
b)y=3x-2
Direct; as x increases, y increases
--------------------
c)xy=10
Indirect ; as x increases, y decreases
---------------------------
d)y=-4x
Direct; as x increases y becomes more negative
---------------------------
e)x=3
None ; not a function
============================
Cheers,
Stan H.