Parallel Lines in the Coordinate Plane: Quick Exploration
DIRECTIONS:
In the applet below,
Once done, please answer the questions that appear below the applet.
| 1. |  | Use the line tool to construct a line. |
| 2. |  | Use the parallel line tool to construct a line that is parallel to the line you constructed in (1). |
| 3. |  | Use the slope tool to measures and display the slopes of both lines. |
| 4. |  | Select the move tool. Move any one (or more) of these points around. |
From what you've observed, what can we conclude about any two (non-vertical) lines drawn in the coordinate plane?
If a line has a slope of zero, then it