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Introductory Algebra Glossary

Introductory Algebra Glossary. Chapter Two. linear equation in one variable. A linear equation in one variable can be written in the form ax = b, where a and b are real numbers, with a  0. solution set. The set of all solutions of a particular equation. equivalent equations.

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Introductory Algebra Glossary

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  1. Introductory AlgebraGlossary Chapter Two

  2. linear equation in one variable • A linear equation in one variable can be written in the form ax = b, where a and b are real numbers, with a  0.

  3. solution set • The set of all solutions of a particular equation.

  4. equivalent equations • Equations that have the same solution set.

  5. empty set (null set) • The set containing no elements, denoted by { } or Ø.

  6. degree • A degree is a basic unit of measure for angles in which one degree (1°) is 1/360 of a complete revolution.

  7. complementary angles (complements) • Complementary angles are angles whose measures have a sum of 90°.

  8. supplementary angles (supplements) • Supplementary angles are angles whose measures have a sum of 180°.

  9. consecutive integers • Two integers that differ by one.

  10. perimeter • The measure of the distance around the outside edges of a two-dimensional figure, the sum of the lengths of its sides.

  11. circumference • The distance around a circle.

  12. area • A measure of the surface covered by a two-dimensional figure.

  13. vertical angles • The angles that lie opposite each other when two lines intersect.

  14. straight angle • A straight angle measures 180°.

  15. ratio • A comparison of two quantities with the same units: • 3 to 4, 3:4 and 3/4 are all equivalent expressions of the same ratio.

  16. proportion • A statement that two ratios are equal: • 1:2 = 2:4

  17. cross products • In the proportion a/b = c/d, the cross products are ad and bc.

  18. vary directly as (is proportional to) • y varies directly as x if there exists a nonzero number k such that y = kx.

  19. interval notation • A simplified notation which uses parentheses, ( ), and/or brackets, [ ], to describe an intervalon a number line.

  20. three-part inequality • An inequality that says that one number is between two other numbers.

  21. Return toIntroductory Algebra • Created by • James Q. Jacobs • Superstition Mountain Campus • Central Arizona College

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