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# Chapter 1 Vocab

TermDefinition
Variable A symbol, usually a letter, that represents one or more numbers
Coefficient The number that is multiplied by the variable in an algebraic expression
Expression A mathematical phrase containing numbers, operations, and/or variables
Constant Term A term that has a number but no variable
Evaluate (an algebraic expression) Substitute a number for each variable in an algebraic expression. Then use the order of operations to find the value of the numerical expression
Substitute to replace a variable with a number or another expression in an algebraic expression
Equation A mathematical sentence that uses an equal sign, =, to show that two expressions are equal
Solve to find an answer or solution
Solution of an Equation A value that makes an equation true
Inverse Operation Operations that “undo” each other, such as addition and subtraction or multiplication and division
Isolate the Variable to get a variable alone on one side of an equation or inequality in order to solve equation or inequality
Term the parts of an expression that are added together
Like Term Terms that have identical variable parts
Equivalent Expression Expressions with the same value
Simplify to write a fraction or expression in simplest form
Distributive Property To multiply a sum or difference by a number, multiply each number in the sum or difference by the number outside the parentheses. Then evaluate.
Order of Operations The order in which to perform operations when evaluating expressions with more than one operation
Ordered Pair A pair of numbers (x, y) used to locate a point in a coordinate plane. The first number is the x-coordinate, and the second number is the y-coordinate
Integer The set of whole numbers and their opposites
Opposite two numbers that are an equal distance from zero on a number line
Absolute Value The distance between a number and 0 on a number line. The absolute value of a number a is written as |a|.1
Created by: lexcirig21