y-axis

Definition of y-axis

• The coordinate plane is formed by the intersection of two number lines, a horizontal number line and a vertical number line. The vertical number line is called the y-axis.

                                     

Examples of y-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.

                                                   

Solved Example on y-axis

Which of the following graphs has a point P on the y-axis?

                           

Choices:

A.  Graph 1

B.  Graph 2

Correct Answer: A

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 vertical number line is called the y-axis.

Step 2:Graph 1 has the point P on the vertical number line i.e., on the y-axis.

                                                

Related Terms for y-axis

• Coordinate Plane
• Number Line

                                                           

Additional Links for y-axis

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