Algebra 1 Common Core Student Edition, Grade 8-9

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Perfect squares (p. 17)
are integers.

Numbers whose square roots Cuadrado perfecto (p. 17)

un numero entero.

Numero cuya raiz cuadrada es

Example The numbers 1, 4, 9, 16, 25, 3 6 ,..

are perfect squares because they

are the squares of integers.

Perfect square trinom ial (p. 523) Any trinomial of the
form a 2 + 2 ab + b2 or a 2 - lab + b2.

Trinomio cuadrado perfecto (p. 523) Todo trinomio de la

forma a 2 + lab + b2 o a 2 - lab + b2.

Example (x+3)2 =x 2 + 6 x + 9

Permutation (p. 763) An arrangement of some or all of a

set of objects in a specific order. You can use the notation nPr

to express the number of permutations, where n equals the

number of objects available and r equals the number of

selections to make.

Permutacion (p. 763) Disposicion de algunos o de todos

los objetos de un conjunto en un orden determinado. El

numero de permutaciones se puede expresar con la

notacion nPr, donde n es igual al numero total de objetos y r

es igual al numero de selecciones que han de hacerse.

Example How many ways can you arrange

5 objects 3 at a time?

n 5! 5! 5* 4* 3* 2* 1

5P3 ~ :(5 - 3 )! 2! 2 • 1 = 60

There are 60 ways to arrange

5 objects 3 at a time.

Perpendicular lines (p. 331) Lines that intersect to form

right angles. Two lines are perpendicular if the product of

their slopes is - 1.

Example

Rectas perpendiculares (p. 331) Rectas que forman

Angulos rectos en su interseccibn. Dos rectas son

perpendiculares si el producto de sus pendientes es - 1.

V\y ri'

X

Piecewise function (p. 348) A piecewise function has

different rules for different parts of its domain.

Point-slope form (p. 315) A linear equation of a

nonvertical line written as y~y-\ = m {x -x-j). The line

passes through the point (x1f y^) with slope m.

Funcion de fragm entos (p. 348) Una funcion de

fragmentos tiene reglas diferentes para diferentes partes de

su dominio.

Forma punto-pendiente (p. 315) La ecuacion lineal de

una recta no vertical que pasa por el punto (x1; y{) con

pendiente m esta dada por y-y-\ = m (x-x)).

Example An equation with a slope of —j

passing through ( 2 , - 1 ) would be

written y +^1 = - j(x-

point-slope form.

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