## Alg. Ch. 11 Vocab McDougal Littell

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ChibsterRama  on March 29, 2012

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# Alg. Ch. 11 Vocab McDougal Littell

 ProportionAn equation stating that two ratios are equal.
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#### Definitions

Proportion An equation stating that two ratios are equal.
Extremes of a Proportion The first and last terms of a proportion.
Means of a Proportion The middle terms of a proportion
Solving a Proportion To solve a proportion, cross multiply.
Extraneous Solution An apparent solution that must be rejected because it does not satisfy the original equation
Base Number of a Percent Equation The number that is being compared to in any percent equation; The number b in the verbal model a is p percent of b.
Inverse Variation Y varies inversely as x if there is some nonzero constant k such that xy=k or y=k/x.
Constant of Variation The constant k in direct and inverse variation equations.
Rational Number A number that can be written as a fraction.
Rational Expression A fraction whose numerator, denominator, o both numerator and denominator are nonzero polynomials.
Simplified Rational Expression A rational expression in which the numerator and denominator have no common factors other than ±1.
Geometric Probability The probability of an event is based on a ratio of geometric measures such as length or area.
Least Common Denominator The least common multiple of the denominators of two or more fractions.
Polynomial Long Division A method used to divide polynomials similar to the way you divide numbers.
Rational Equation An equation that contains one or more rational expressions.
Rational Function A function that can be written as a polynomial divided by a polynomial.
Hyperbola The graph of a rational function.
Center of a Hyperbola The point (h, k) in the graph of the rational function f(x)=(a/x-h)+k.
Asymptote A line that a graph approaches; The distence between the graph and the line approaches zero.

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