Question

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complete the sentence.
on the coordinate plane, the ______ is the first number of an ordered pair.
x - coordinate
y - coordinate
x - axis
y - axis

Explanation:

An ordered pair is in the form \((x, y)\), where the first number represents the \(x\)-coordinate (horizontal position) and the second is the \(y\)-coordinate (vertical position). The \(x\)-axis and \(y\)-axis are the horizontal and vertical lines, not the numbers in an ordered pair. So the first number of an ordered pair is the \(x\)-coordinate.

Answer:

A. \(x\)-coordinate