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10 October, 14:57

Which order pair is a solution of the inequality 4x - 2y > 20?

A. (2, - 7) B. (-2, - 7) C. (-2, 7) D. (2, 7)

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Answers (1)
  1. 10 October, 16:28
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    Let's solve for all of the ordered pairs ...

    A. (2,-7)

    4x-2y>20

    4 (2) - 2 (-7) >20

    8+14>20

    22>20

    True

    B. (-2,-7)

    4x-2y>20

    4 (-2) - 2 (-7) >20

    -8+14>20

    6>20

    Not true

    C. (-2,7)

    4x-2y>20

    4 (-2) - 2 (7) >20

    -8-14>20

    -22>20

    Not true

    D. (2,7)

    4x-2y>20

    4 (2) - 2 (7) >20

    8-14>20

    -6>20

    Not true

    A is the correct answer
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