Horizontal Axis
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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.
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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