The abscissa of all the points on the y-axis is 0.
To understand this, let’s delve into the coordinate system. In the Cartesian coordinate system, every point is represented by a pair of numbers (x, y), where ‘x’ represents the horizontal position (abscissa) and ‘y’ represents the vertical position (ordinate).
Points on the y-axis have a horizontal position of 0 because they are positioned directly above or below the origin (0, 0) along the vertical line that constitutes the y-axis. Thus, regardless of the value of ‘y’ (which can be any real number), the corresponding ‘x’ value remains 0 for any point on this axis. Hence, the abscissa for all points on the y-axis is consistently 0.