Horizontal Axis
Definition of Horizontal Axis
Horizontal means flat or level.
Horizontal axis is the xaxis on a graph.
The blue number line in the figure below is the xaxis, the horizontal axis.
More About Horizontal Axis
 The short hand in the analog clock is the hour hand.
 24 hours = 1 day
 1 hour = 60 minutes
 1 minute = 60 seconds
Video Examples: Acute and Obtuse Angles in Geometry
Solved Example on Horizontal Axis
Ques: Point B is 5 units to the left of point A on the horizontal axis. Find the coordinates of B if A is at (8, 7).
Choices:
A. (3, 7)B. (13, 7)
C. (7, 8)
D. (8, 12)
Correct Answer: A
Solution:

Step 1: (8, 7) ⇒ 8 on the xaxis and 7 on the yaxis.
Step 2: Point B is 5 units to the left of point A on the horizontal axis, i.e. xaxis.
Step 3: So, the xcoordinate of B is 8 � 5 = 3
Step 4: The coordinates of point B is (3, 7).
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