What equations represents the axis?

The equations that represent the axes in a Cartesian coordinate system are (x = 0) for the y-axis and (y = 0) for the x-axis. The x-axis is the horizontal line where the y-coordinate is zero, while the y-axis is the vertical line where the x-coordinate is zero. Together, these axes form the foundation for defining points in the plane using ordered pairs ((x, y)).