These transformations shift figures on a coordinate plane. One adjusts the y-coordinate, moving the figure up or down. For instance, adding a constant to the y-coordinate of every point on a parabola results in a parallel shift along the y-axis. The other adjusts the x-coordinate, causing a lateral displacement to the left or right. Subtracting a constant from the x-coordinate of every point on a line results in a parallel shift along the x-axis.
These operations are fundamental in understanding function behavior and graphical representations. They allow for the manipulation and comparison of functions, revealing relationships and patterns. Historically, these transformations have been crucial in fields like physics, where modeling movement and changes in position is paramount, and in computer graphics, where object manipulation and animation rely heavily on geometric transformations.