# Vertical and Horizontal lines

- Author:
- ccarley

- Topic:
- Straight Lines

General Information:
Changing the sliders will change the x-coordinate or the y-coordinate (by integers). The coordinates of point A will change accordingly.
Dragging the point A will change the coordinates (by tenths).
The equation for the horizontal line is in red. The equation for the vertical line is in blue.

To do:
1. Use the slider to change the x value. Describe what happens to the red and blue lines.
2. Use the slider to change the y value. Describe what happens to the red and blue lines.
3. Does the equation x=3 represent a vertical or horizontal line?
4. Does the equation y=3 represent a vertical or horizontal line?
5. What is the equation of the vertical line through the point (3,5)?
6. What is the equation of the horizontal line through the point (3,5)?
7. What is the equation of the x-axis?
8. What is the equation of the y-axis?