A vertical line goes straight up an down, so a vertical line segment is a line segment that goes straight up and down. Simple.
A line segment is the line that connects two points.
zero
The line x = 4 is a verticle line because, in a standard x-y graph, where x increases to the right and y increases upwards, the graph x = 4 is all points y, where x is 4. That is a verticle line, with infinite slope.
a line that is neither verticle or horizontal
First you draw a short verticle line and a semi-circle another short verticle line then a sharp coner then a horizontal line that is once again short. On the opposite side draw a verticle line. Thene on the top of the picture draw some hair, and some facial features.
Since the line is verticle, the only axis that can define the line is the x-axis. Therefore the equation of a verticle line is always in the form of x=a, where a is some constant. For example, x=1; this means that the verticle line passes through the point (1,0)i.e the x axis at 1.
y axis
It is the y-axis and the horizontal line is the x-axis
Yes the graph of a function can be a vertical or a horizontal line
Line segment AI, line segment BG, line segment GH and line segment CE
No it can't because a line segment is a line that is straight. So it is not a line segment.
line segment
A line extends forever into space and a line segment is a segment or part of a line, so a line is longer than a line segment.