click below
click below
Normal Size Small Size show me how
Unit 1: Review Alg 2
Vocabulary terms for sections 1-1, 1-2, 1-3, 1-4, 2-1, 2-2, and 2-4
| Term | Definition |
|---|---|
| Opposite | The additive inverse of any number a is -a. |
| Additive Inverse | The opposite of any number a is -a. |
| Reciprocal | The multiplicative inverse of any nonzero number a is 1/a. |
| Multiplicative Inverse | The reciprocal of any nonzero number a is 1/a. |
| Absolute Value | The distance from zero on the number line. |
| Variable | A symbol, usually a letter, that represents one of more numbers. |
| Expression | Combination of one or more variables. |
| Evaluate | Substitute numbers for variables in an expression and follow the order of operations. |
| Term | A number, variable, or the product of a number and one or more variables. |
| Coefficient | The numerical factor in a term. |
| Solution of an equation | A number that makes an equation true. |
| Compound Inequality | A pair of inequalities joined by "and" or "or". |
| Relation | A set of pairs of input and output values. |
| Domain | The set of all inputs, or x-coordinates of ordered pairs. |
| Range | The set of all outputs, or y-coordinates of ordered pairs. |
| Mapping Diagram | Links the elements of the domain with corresponding elements of the range. |
| Function | A relation in which each element of the domain is paired with exactly one element in the range. |
| Linear Function | A function whose graph is a line. |
| Dependent Variable | y variable |
| Independent Variable | x variable |
| y-intercept | Point at which the line crosses the y-axis. |
| x-intercept | Point at which the line crosses the x-axis. |
| Standard form of a linear equation | Ax + By = C |
| Slope | The ratio of the vertical change to a corresponding horizontal change. Rise over run. |
| Point-slope form | y – y1 = m(x – x1) |
| Slope-intercept form | y = mx + b |