IN MATH: 1. n. two ordered numbers; two numbers with a specific first number and a specific second number. The symbol is: (1st number, 2nd number). EX. Ordered pairs are often used to match numbers in relations or functions. Ordered pairs which name points are called COORDINATES.

IN ENGLISH: 1. as defined above.

APPLICATION: (see list 230)

    Fill in the missing number.
  1. If y = 3x, an ordered pair is (4, __)
  2. If x + y = 2, an ordered pair is (1, __)
  3. If x + y = 2, an ordered pair is ( __, -1)
  4. If x - 3 = y, an ordered pair is (__, 0)

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