### Alg Chapter 1 Vocabulary

James McMillian

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 constant the natural numbers and zero:0,1,2,3....... terminating decimal one of two numbers whose product is 1 rational the value substituted for x in an equation. multiplicative inverse an expression that may contain variables, constants and operations. variable the reciprocal of a number, used when dividing rational numbers. order of operations a letter or symbol used to represent a value that can change. reciprocal rules specifying which operations in an expression should be performed. algebraic the point of intersection of each 0 on two perpendicular number lines. input formed by the intersection of two perpendicular number lines y-coordinate the opposite of a number, used when subtracting numbers. additive inverse rational numbers in decimal form that have a finite number of digits. evaluate a number multiplied by a variable. term the parts of an expression to be added or subtracted. like terms an expression written with an exponent and a base or the value of such an expression. axes the distance of a number from zero on the number line. perfect square the horizontal number line. base rational numbers in decimal form that have a block of one or more digits that repeats continuously. x-axis the value generated for y in an equation. whole the number whose positive square root is a whole number. natural one of the four areas defined by the axes of the coordinate plane y-axis the counting numbers:1,2,3....... opposites a number which when multiplied by itself forms a product. real the vertical number line. coordinate plane an expresssion that may contain only constants and operations. irrational numbers that cannot be expressed in the form a/b including square roots of whole numbers that are not perfect squares and nonterminating decimals that do not repeat power a value that does not change. square root the number that tells how many times the base is used as a factor. ordered pair numbers which are the same distance from zero on the number line, but on opposites sides of zero. integers the number that is used as a factor in a power. quadrant the whole numbers and their opposites:....-3,-2,-1,0,1 coefficient to find the value of an expression absolute value the horizontal component and vertical component of a point. origin perpendicular number lines x-coordinate the numbers that can be expressed in the form a/b, where a and b are both integers and b is not equal to 0 numerical the first value in an ordered pair, which indicates the move right or left. output all numbers that can be represented on the number line. exponent terms that contain the same variables raised to the same powers. repeating decimal the second value in an ordered pair, which indicates the move up or down.

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