Variations
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Direct Variation Function | y= kx^n
k doesn't equal zero
n>0
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Inverse Variation Function | y= k/x^n
k doesn't equal zero
n>0
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Combined Variation | when direct and inverse variations occur together
y= kx/z
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joint variation | when one quantity varies directly as the product of two or more independent variables, but not inversely as any variable.
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The rate of change from (20,25) (40, 100) | r1= 100ft-25ft/ 40mph- 20mph = 70ft/ 20mph = 3.75 ft/mph
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Fundamental Theorem of Variation | a. if y varies directly as x^n and x is multiplied by c then y is multiplied by c^n
b. if y varies inversely as x^n and x is multiplied by a nonzero constant c, then y is divided by c^n
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Hyperbola | graph of every function with an equation of the form y= k/x
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Created by:
victoriapugsley
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