Study line segments in the number plane.

Study line segments in the number plane.

- Drag either of the blue points to adjust the segment.
- The resulting change in the segment depends on the constraint setting:
- None
- The points may be dragged anywhere,
- X
- The x coordinate of each point is fixed, so the allowed movement is only up or down,
- Y
- The y coordinate of each point is fixed, so the allowed movement is only left or right,
- X + Y
- The point moves only along the line extended from the current segment.
- Clicking and dragging the line itself allows translation of the segment.
- If
*Triangle*is selected, the rise and run are shown in green. The length of the segment is shown on the plot as a decimal and above the plot as an exact value. - If
*Extend*is selected, the line segment is extended into a line, and its equation is displayed and updated as points are moved. - Click and hold the chart background to bring up a magnifier.