In an ordered pair (x, y) that gives the coordinates of a point, what does the first number represent?

1. An ordered pair always lists the coordinates in the same order. 2. The first number in the pair is defined as the x-coordinate. 3. The second number is the y-coordinate instead, and a quadrant number or the origin are different concepts entirely. _Source: OpenStax Prealgebra (CC BY 4.0), Ch 11 "Graphs", section 11.1 Use the Rectangular Coordinate System_