X-Axis
Definition Of X-Axis
The coordinate plane is formed by the intersection of two number lines, a horizontal number line and a vertical number line. The horizontal number line is called the x-axis.
More About X-Axis
The equation of x-axis is y = 0
The y-coordinate or ordinate of every point on x-axis is equal to 0
Examples of X-Axis
The figure shows the coordinate plane formed by the intersection of the x- and y- axes.
Their point of intersection is called the origin.
Video Examples: Where Does a Line Cross the X or Y Axis
Solved Examples on X-Axis
Ques: Which of the following graphs has a point P on the x-axis?
Choices:
A. Graph 1
B. Graph 2
Correct Answer: B
Solution:
Step 1: The coordinate plane is formed by the intersection of two number lines, a horizontal number line and a vertical number line. The horizontal number line is called the x-axis
Step 2: Graph 2 has the point P on the horizontal line i.e., on the x-axis.
Ques: Which of the following points lie on x-axis?
Choices:
A. (1, 1)
B. (1, 0)
C. (0, 1)
D. (-1, -1)
Correct Answer: B
Solution:
Step 1: We know that, y-coordinate or ordinate of every point on x-axis is equal to 0
Step 2: Therefore, among the ordered pairs given (1, 0) lies on x-axis