SOLUTION: Find an equation of variation for the given situation. y varies inversely as the square of x, and y = 7 when x = 3

SOLUTION: Find an equation of variation for the given situation. y varies inversely as the square of x, and y = 7 when x = 3

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Question 366442: Find an equation of variation for the given situation.
y varies inversely as the square of x, and y = 7 when x = 3
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
from the inverse relationship, where k is the constant of proportionality. When y = 7, x = 3, so . Hence k = 63, and therefore the variation equation is .
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