Find vertical/horizontal lines

Horizontal lines go left and right and are in the form of y = b, where b represents the y-intercept, while vertical lines go up and down and are in the form of x = a where a represents the shared x-coordinate of all points. All you need to do is remember these.

1. Is Y =- 3 vertical or horizontal?
2. How do you find the vertical line?
3. How do you find a horizontal line?

Is Y =- 3 vertical or horizontal?

If a line has an equation y = 3, then is it a horizontal or vertical line? y = 3 is a horizontal line equation. The line will pass through the point y = 3 at y-axis and will be parallel to the x-axis.

How do you find the vertical line?

The equation of a vertical line is given by x = a, or x = -a, where x is the x coordinate of any point on the line and a is where the line crosses the x-intercept.

How do you find a horizontal line?

Horizontal lines have a slope of 0. Thus, in the slope-intercept equation y = mx + b, m = 0. The equation becomes y = b, where b is the y-coordinate of the y-intercept.