Which term describes the first number in an ordered pair?

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Study for the 8th Grade Mathematics Test. Prepare with multiple choice questions, each with hints and explanations. Get ready for your exam!

Multiple Choice

Which term describes the first number in an ordered pair?

Explanation:
In a coordinate plane, points are written as (x, y). The first number is the x-coordinate, describing horizontal position. The second number is the y-coordinate, describing vertical position. The term ordered pair refers to the whole two-number pair, not just the first value. Domain refers to the set of all possible x-values in a relation, not the single first value of one pair. For example, in (5, -2), 5 is the x-coordinate.

In a coordinate plane, points are written as (x, y). The first number is the x-coordinate, describing horizontal position. The second number is the y-coordinate, describing vertical position. The term ordered pair refers to the whole two-number pair, not just the first value. Domain refers to the set of all possible x-values in a relation, not the single first value of one pair. For example, in (5, -2), 5 is the x-coordinate.

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