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Unit 5 Vocabulary
one-step equations and inequalities
| Term | Definition |
|---|---|
| Addition Property of Equality | Adding the same number to each side of an equation produces an equivalent expression. |
| Constant of proportionality | The constant value of the ratio of two proportional quantities x and y; usually written y = kx, where k is the constant of proportionality. |
| Dependent Variable | A variable that depends on other factors. |
| Direct proportion (Direct Variation) | The relation between two quantities whose ratio remains constant. |
| Division Property of Equality | States that when both sides of an equation are divided by the same number, the remaining expressions are still equal. |
| Equation | A mathematical sentence that contains an equal sign. |
| Independent Variable | A variable that stands alone and isn't changed by the other variables you are trying to measure. For example, someone's age might be an independent variable. |
| Inequality | A mathematical sentence that contains the symbols >, <, ≥, or ≤. |
| Inverse Operation | A mathematical process that combines two or more numbers such that its product or sum equals the identity. |
| Multiplication Property of Equality | States that when both sides of an equation are multiplied by the same number, the remaining expressions are still equal. |
| Proportion | An equation which states that two ratios are equal. |
| Solution | the set of all values which, when substituted for unknowns, make an equation true. |
| Substitution | the process of replacing a variable in an expression with its actual value |
| Subtraction Property of Equality | States that when both sides of an equation have the same number subtracted from them, the remaining expressions are still equal. |
| Term | A number, a variable, or a product of numbers and variables. |
| Variable | A letter or symbol used to represent a number or quantities that vary. |