| A | B |
|---|
| Axes | Two perpendicular number lines used to identify points in a plane. |
| Origin | The point on a coordinate plane where the two axes intersect. |
| Coordinates | The numbers in an ordered pair. |
| Quadrants | The four regions into which the axes divide a plane. |
| Interpolation | The process of estimating a value between given values. |
| Extrapolation | The process of estimating a value that goes beyond the given data. |
| Graph of equation | A line or a curve that represents all the solutions to an equation. |
| Linear equation | Any equation that can be written in the form y =mx + b or Ax + By = C. |
| Nonlinear graph | An equation that when graphed is not a line. |
| y-intercept | A point at which a graph crosses the y-axis. |
| x-intercept | A point at which a graph crosses the x-axis. |
| Rate | A ratio that indicates how two quantities change with respect to each other. |
| Slope | The ratio of the rise to the run for any two points on a line. |
| Grade | The measure of a road's steepness. |
| Slope-intercept form | An equation of the type y = mx + b. |
| Parallel | Lines that extend indefinitely without intersecting. |
