SOLUTION: Suppose that x and y vary inversely, and x =7 when y-11. Write the function that models the inverse variation. Chaper 9 ISBN number is 0-13-125089-2

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Question 182869: Suppose that x and y vary inversely, and x =7 when y-11. Write the function that models the inverse variation. Chaper 9 ISBN number is 0-13-125089-2
Answer by Mathtut(3670) About Me  (Show Source):
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Suppose that x and y vary inversely, and x =7 when y-11. Write the function that models the inverse variation. Chaper 9 ISBN number is 0-13-125089-2
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if x varies inversely as y then the equation takes the form of
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xy=k where k is the constant of variation
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in our case
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x=7 and y=11
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7(11)=k------>k=77
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so you can write this as xy=77 or x=77(1/y)....what ever makes you feel comfortable in understanding.
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an inverse relationship simply means if one variable increases the other decreases and vice versa