Prentice Hall Algebra 1

Visual Glossary

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Absolute value (p. 31) The distance that a number is from zero on a number line.

Valor absoluto (p. 31) La distancia a la que un número está del cero en una recta numérica.
Example negative 7  is 7 units from 0, so vertical line negative 7 vertical line equals 7 .

Absolute value function (p. 342) A function with a V-shaped graph that opens up or down. The parent function for the family of absolute value functions is y = | x |.

Función de valor absoluto (p. 342) Función cuya gráfica forma una V que se abre hacia arriba o hacia abajo. La función madre de la familia de funciones de valor absoluto es y = | x |.
Example A graph consists of 2 rays with a common vertex at approximately (3, 0). One rises left through approximately (0, 3). The other rises right through approximately (6, 3).

Additive inverse (p. 32) The opposite or additive inverse of any number a is negative eh .  The sum of opposites is 0.

Inverso aditivo (p. 32) El opuesto o inverso aditivo de cualquier número a es negative eh .  La suma de los opuestos es 0.
Example negative 5  and 5 are additive inverses because negative 5 plus 5 equals 0 .

Algebraic expression (p. 4) A mathematical phrase that includes one or more variables.

Expresión algebraica (p. 4) Frase matemática que contiene una o más variables.
Example 7 + x is an algebraic expression.

Angle of depression (p. 636) An angle from the horizontal down to a line of sight. It is used to measure heights indirectly.

Ángulo de depresión (p. 636) Un ángulo de la horizontal hacia la línea de vista. Ángulo con que se miden indirectamente las alturas.
Example

A right triangle has one leg that is horizontal and one that is vertical. The hypotenuse falls to the lowest point on the vertical leg and is labeled “line of sight.” The angle of depression is the angle between the horizontal leg and the hypotenuse.


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Table of Contents

Prentice Hall Algebra 1 Chapter 1 Foundations for Algebra Chapter 2 Solving Equations Chapter 3 Solving Inequalities Chapter 4 An Introduction to Functions Chapter 5 Linear Functions Chapter 6 Systems of Equations and Inequalities Chapter 7 Exponents and Exponential Functions Chapter 8 Polynomials and Factoring Chapter 9 Quadratic Functions and Equations Chapter 10 Radical Expressions and Equations Chapter 11 Rational Expressions and Functions Chapter 12 Data Analysis and Probability Skills Handbook Reference Visual Glossary Selected Answers Index Acknowledgments