| A | B |
| The domain of a linear function | All real numbers |
| Linear function | a line |
| In a function, the same y CAN have | different x values |
| Easiest way to remember function rule? | 69 on a test can't be both an A and a D |
| Domain of a function | all allowable values of x |
| Range of a function | all allowable values of y |
| NOT a function if same x has | different y values |
| To determine if a graph is a function, apply the | vertical line test |