The equation "y = 2" represents a horizontal line on a graph where the value of y is always 2, regardless of the value of x. This means that for every point on this line, the y-coordinate will remain constant at 2, while the x-coordinate can take any value. In a Cartesian coordinate system, this line intersects the y-axis at the point (0, 2). It is a simple linear equation, illustrating a basic concept in algebra and geometry, where the relationship between x and y is defined clearly and consistently.