dictionary.reference.com/browse/Vary Inversely

en.wikipedia.org/wiki/Proportionality_(mathematics)

In mathematics, two variables are proportional if a change in one is always accompanied by a .... The graph of two variables varying inversely on the Cartesian coordinate plane is a rectangular hyperbola. The product of the x and y values of ...

www.sparknotes.com/math/algebra1/variation/section2.rhtml

Inverse Variation. The statement " y varies inversely as x means that when x increases, y decreases by the same factor. In other words, the expression xy is ...

www.merriam-webster.com/dictionary/inversely

Define inversely: in an inverse order or manner — inversely in a sentence. ... 2 : in the manner of inverse variation varies inversely. NEW! First Known Use: 1660.

www.khanacademy.org/math/algebra2/rational-expressions-equations-and-functions/direct-and-inverse-variation/v/direct-and-inverse-variation

Sal explains what it means for quantities to vary directly or inversely, and gives many examples of both types of variation.

www.themathpage.com/alg/variation-2.htm

Varies inversely. We say that a quantity a varies inversely as a quantity b, if, when b changes, a changes in the inverse ratio. This means that if b doubles, then a ...

www.dictionary.com/browse/inverse

Inverse definition, reversed in position, order, direction, or tendency. See more.

www.varsitytutors.com/hotmath/hotmath_help/topics/inverse-variation

While direct variation describes a linear relationship between two variables, inverse variation describes another kind of relationship. We say y varies inversely ...

www.wyzant.com/resources/answers/37337/what_does_varies_indirectly_mean_in_math

For example, x and y vary indirectly means x*y is constant. Saying "one ... However, y = -x is not inverse variation, it is direct variation ! Thus, it is ...

www.mesacc.edu/~pikeu/mat120/notes/variation/inverse/inverse.html

Example 1 – If x varies inverse as y, and x = 7 when y = 3, find y when x = 9. ... Inverse variation problems are solved using the equation Inverse . Step 1.