what is a order pair?

 An ordered pair is a pair of elements arranged in a specific, fixed sequence. In mathematics, typically, an ordered pair is used to describe a position on a coordinate plane. An ordered pair is written in the form (a, b), where "a" is the first element, and "b" is the second element. The idea of being "ordered" means that (a, b) is not the same as (b, a) unless a is equal to b. The most common place you'll see ordered pairs is in two-dimensional graphing, where each pair represents the coordinates of a point on the plane.

To be more specific, in the context of a two-dimensional Cartesian coordinate system, "a" represents the horizontal position along the x-axis, and "b" represents the vertical position along the y-axis. So, the ordered pair (3, 2) indicates the point that is 3 units to the right of the vertical y-axis and 2 units above the horizontal x-axis.