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23 August, 13:38

Line M is represented by the following equation: x - y = 8

Which equation completes the system that is satisfied by the solution (18, 10) ?

2x-y=26

x+t=18

2x-2y=36

x-y=-28

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Answers (1)
  1. 23 August, 14:05
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    Let's plug in (18,10) into each answer choice until we find the one that has it as a solution.

    A) 2x - y = 26

    2 (18) - 10 = 26

    36 - 10 = 26

    26 = 26

    Your answer is A.

    I'll just do the rest to show that you the they are incorrect.

    B) x + y = 18

    18 + 10 = 18

    28 ≠ 18

    C) 2x - 2y = 36

    2 (18) - 2 (10) = 36

    36 - 20 = 36

    16 ≠ 36

    D) x - y = - 28

    18 - 10 = - 28

    8 ≠ - 28

    Your answer is A) 2x - y = 26.
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