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Chapter 1 Vocab
| Term | Definition |
|---|---|
| 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|. |