Find the following:

The y coordinate of any point on the x – axis.

[To solve such questions, following are the key points:

1. X coordinate of any point on Y axis is 0.

2. Y coordinate of any point on X axis is 0.

3. If a line is parallel to X axis, then its X coordinate varies, but Y coordinate remains constant.

4. If a line is parallel to Y axis, then its Y coordinate varies, but X coordinate remains constant.]

Since, the equation of X – axis is y = 0, y coordinate of any point on X – axis is 0(zero).