Coordinate Plane:A two-dimensional surface on which points are plotted and located by their x and y coordinates.
Absolute Value Function:A function defined by $f(x) = |x|$, which produces non-negative outputs regardless of whether $x$ is positive or negative.
\$(x, y)\$ Coordinates: An ordered pair that defines a specific location on a coordinate plane, with 'x' representing horizontal displacement and 'y' representing vertical displacement.