| A | B |
|---|
| horizontal line | <->, x-axis |
| vertical line | y axis (up and down) |
| domain | the first value in an ordered pair, the values for x |
| range | the second value in an ordered pair, the value for y |
| independent variable | the values in the range (x value) |
| dependent variable | the values in the domaing (y value) |
| function | a relation in which each element of the domain is paired with exactly one element of the range, only one y value with each x value (x values cannot repeat) |
| vertical line test | If you draw a vertical line and it hits the figure on the graph *o ne time – it is a function *o more than one time – it is NOT a function |
| function rule | y = 2x +3 (what action is being done to the variable x) |
