| A | B |
| x-axis | horizontal axis in coordinate plane |
| y-axis | vertical axis in coordinate plane |
| x-intercept | value of x at the point where a line or curve crosses the x-axis |
| y-intercept | value of y at the point where a line or curve crosses the y-axis |
| coordinate plane | plane determined by the horizontal x-axis and the vertical y-axis |
| Cartesian plane | another name for coordinate plane; named for French mathematician Rene Descartes |
| ordered pair | in coordinate plane, set of two numbers (x,y) where 1st coordinate is horizontal position and 2nd coordinate is vertical position |
| origin | point (0,0) in coordinate plane where x-axis and y-axis intersect |
| abscissa | 1st element in an ordered pair; often called the x-coordinate |
| ordinate | 2nd element in an ordered pair; often called the y-coordinate |