A point is on the x-axis. What are its y-coordinates and z-coordinates?
We know that coordinates of any point on the z-axis will be (x, 0, 0). Thus y-coordinate and z-coordinate of the point are zero.
A point lies on x-axis at a distance of 9 units from y-axis. What are its coordinates? What will be the coordinates of a point if it lies on y-axis at a distance of -9 units from x-axis?
Coordinates of a point on the x-axis are ________