SOLUTION: Y varies directly with X; Y=3150 when X=0.4 Find the constant variation

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Question 620665: Y varies directly with X;
Y=3150 when X=0.4
Find the constant variation
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
Y varies directly with X;
Y=3150 when X=0.4
Find the constant variation
.
When you see "varies directly" think:
y = kx
substitute the given values for y and x to find k:
3150 = k(0.4)
3150/(0.4) = k
7875 = k
.
answer: "constant variation" is 7875