SOLUTION: Suppose y varies directly with x, and y=36 when x=20. Find an equation of variation for x and y. I need assistance with this problem thanks in advance.

Question 635829: Suppose y varies directly with x, and y=36 when x=20. Find an equation of variation for x and y.

I need assistance with this problem thanks in advance.
Answer by KMST(5398) (Show Source): You can put this solution on YOUR website!
In a direct variation, equals multiplied times a factor :

That way, as doubles, doubles; as triples (or trebles, if you like that word better), triples (or trebles), and so on.
The ratio is the constant <---> .

It's all a question of finding your constant.
In this case,
and for , , so
--> -->
So .
If your teacher would rather have fractions than decimals,
and or
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