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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 a 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 the 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|.
Created by: cactuszucchni