Algebra 1 Common Core Student Edition, Grade 8-9

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Rational function (p. 699) A function that can be written

in the form f(x) =polynomialpolynomial

make the denominator equal to 0.

The value of the variable cannot

Example

Funcion racional (p. 699) Funcion que puede expresarse

de forma f(x) =polinomiopolinomio' El Valor de la variable no Puede

hacer el denominador igual a 0.

Rationalize the denominator (p. 622) To rationalize the

denominator of an expression, rewrite it so there are no

radicals in any denominator and no denominators in any

radical.

Racionalizar el denominador (p. 622) Para racionalizar el

denominador de una expresion, esta se escribe de modo que

no haya radicales en ningun denominador y no haya

denominadores en ningun radical.

Example 2 2 , V 5 2 V5 2 V5
V5 V5 ’ V5 V25 5
Rational number (p. 18) A real number that can be
written as a ratio of two integers. Rational numbers in
decimal form are terminating or repeating.

Numero racional (p. 18) Numero real que puede

expresarse como la razon de dos numeros enteros. Los

numeros racionales en forma decimal son exactos o

periodicos.

Example f , 1.548, and 2.292929 ... are all

rational numbers.

Real num ber (p. 18)
irrational.

A number that is either rational or Numero real (p. 18)

irracional.

Un numero que es o racional 0

Example 5, - 3 , V T T , 0.666.. ., 5^-, 0 ,

and 7 r are all real numbers.

Reciprocal (p. 41) Given a nonzero rational number f , the
reciprocal, or multiplicative inverse, is h 3. The product of a
nonzero number and its reciprocal is 1.

Reciproco (p. 41) El reci pr oco, o i nverso mul t i pl i cat i vo, de

un numero racional | cuyo valor no es cero es |. El producto

de un numero que no es cero y su valor reciproco es 1.

Example^2 ^ and ^^5 are reciprocals because

2 V 5 = I

5 2

Recursive form ula (p. 275) A recursive formula defines
the terms in a sequence by relating each term to the ones
before it.

Formula recursiva (p. 275) Una formula recursiva define

los terminos de una secuencia al relacionar cada termino con

los terminos que lo anteceden.

Example Let an = 2.5an_-| + 3an_2.

If a 5 = 3 and a 4 = 7.5, then

a 6 = 2.5(3)+ 3(7.5) = 30.

Relation (p. 268) Any set of ordered pairs. Relacion (p. 268) Cualquier conjunto de pares ordenados.

Example {(0, 0), (2, 3), (2, -7)} is a relation.

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Po w er A lg eb r a.co m Glo ssary 851

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