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variation and graphs

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Question
Answer
Suppose z varies directly as the fourth power of w. if z = 80 when w = 2, find z when w = 3.   When w = 3, z = 405.  
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Consider the equation s = 5d^2. How does the value of s change if d is doubled?   Multiplied by 4.  
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write the variation equation m = kn^5 in words.   m varies directly as n to the fifth power.  
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Complete with "inversely," "directly," or "neither." the time it takes to run a given distance varies ____ as the rate.   inversely.  
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What is a inverse variation function?   A function with a formula of th form y = k/x^n, with k not equal to 0 and n > 0.  
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given the equation y = k/x^3, suppose that y = 4 hen x = 3. find y when x = 5.   y = 108/125  
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consider y = 6/x. Find the rate of change from x = 1 to x = 2.   -3.  
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Created by: nikkrowley
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