SOLUTION: Find the variation constant and an equation of variation where y varies directly as x and y=12 when x=3. The variation constant is k= ??? the equation of variation is y=???

SOLUTION: Find the variation constant and an equation of variation where y varies directly as x and y=12 when x=3. The variation constant is k= ??? the equation of variation is y=???

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Question 156872: Find the variation constant and an equation of variation where y varies directly as x and y=12 when x=3. The variation constant is k= ???
the equation of variation is y=???
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
The statement " y varies directly as x" translates to

Start with the given equation

Plug in and

Divide both sides by 3 to isolate "k"

So the variation constant is which means that the equation is
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