A statement describing the relationship between the variables x,y and z is given. (a) Express the statement as an equation of proportionality. (b) If x is tripled and y is doubled, by what factor does z change? z is inversely proportional to the square of x and the cube of y.

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter1: Equations And Graphs
Section1.10: Modeling Variation
Problem 33E
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A statement describing the relationship between the variables x,y and z is given. (a) Express the statement as an equation of proportionality. (b) If x is tripled and y is doubled, by what factor does z change?

z is inversely proportional to the square of x and the cube of y.

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