SOLUTION: Suppose that x and y vary inversely and x=4 when y=7 Write the function that models the inverse variation a. y+1.75 b. y= 28/x c. y=11/x d. y=3/x

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: Suppose that x and y vary inversely and x=4 when y=7 Write the function that models the inverse variation a. y+1.75 b. y= 28/x c. y=11/x d. y=3/x      Log On


   



Question 139525: Suppose that x and y vary inversely and x=4 when y=7 Write the function that models the inverse variation
a. y+1.75 b. y= 28/x c. y=11/x d. y=3/x

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Suppose that x and y vary inversely
x = k/y
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and x=4 when y=7
So, solve for "k":
4 = k/7
k=28
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Now you know the equation is:
x = 28/y
or y = 28/x
This is the function that models the inverse variation
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a. y+1.75 b. y= 28/x c. y=11/x d. y=3/x
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Answer: b
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Cheers,
Stan H.