Answer:
Two real number lines connect at a right angle to form the rectangular coordinate system. The x-axis is the horizontal number line, and the y-axis is the vertical number line. These two number lines define a plane, which is a flat surface with each point corresponding to an ordered pair of real numbers (x, y). The x-coordinate is the first number, while the y-coordinate is the second number. The origin, which corresponds to the place where the two axes connect, is known as the origin (0, 0).
For more information:
https://saylordotorg.github.io/text_elementary-algebra/s06-01-rectangular-coordinate-system.html
