Answer:
The first number (or x value) of an ordered pair.
Step-by-step explanation:
Abscissa is the first number (or x value) of an ordered pair.
A coordinate plane is a way of locating points in a plane that consists of a horizontal and a vertical number line intersecting at the zeros.
Coordinates are an ordered pair, (x, y), that describes the location of a point in the coordinate plane.
Ordinate is the second number (or y value) of an ordered pair.
Origin is the point of intersection, (0, 0), of the axes in the coordinate plane.
A quadrant is a region in the coordinate plane.
X axis is the horizontal axis in the coordinate plane.
Y axis is the vertical axis in the coordinate plane.
