Skin tags that have changed color or bleed may require your doctor's evaluation and reassurance. Rarely, thrombosed skin tags may be a sign of another condition and need to be biopsied.
The x-axis and y-axis are two lines that create the coordinate plane. The x-axis is a horizontal line and the y-axis is a vertical line. I'm sure you've heard that a million times, but it might hard for you to remember which one is which. Here is a little trick to help you remember...
vertical. adj. 1. at right angles to the horizon; perpendicular; upright Compare horizontal 1: a vertical wall. 2. extending in a perpendicular direction. 3. at or in the vertex or zenith; directly overhead.hese adjectives mean being at or approximately at right angles to the horizon or to level ground. Vertical and upright are often used to signify contrast with what is horizontal: wallpaper with vertical stripes; an upright column.