| A | B |
|---|
| Slope | On a coordinate plane, the steepness of a line. The vertical change is called the "change in Y" and the horizontal change is called the "change in X." |
| Intercept | When drawing graphs of equations, an intercept is the point where the equation line crosses an axis. |
| slope-intercept form of a line | An equation of the form y = mx + b, where m is the slope and b is the Y-intercept of a given line. |
| Formula For Slope | Change in Y(rise)/change in X(run). |
| undefined slope | When the result for the slope formula is a denominator of 0. |
| Zero Slope | When the slope formula evaluates to 0. |
| No Slope | No slope exists. |
| Vertical | Perpendicular to the horizon (at right angles). |
| Perpendicular Lines | Lines which intersect to make right angles. |
| Parallel Lines | Two or more lines that go in exactly the same direction. They always remain the same distance apart. They never meet. |
| Horizontal Lines | Line parallel to, or on a level with, the horizon. |
| Determining The Equation | Calculate the statement that two quantites are equal. |
| Point-Slope Form | For any point (xsub1, ysub1) on a nonvertical line having slope m, the form of a linear equation is as follows: y - ysub1 = m(x - xsub1). |
| Distance Formula | The distance d between any two points with coordinates (xsub1, ysub1) and (xsub2, ysub2) is given by d = the square root (xsub2 - xsub1)² + (ysub2-ysub1)². |
