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22 January, 10:20

X + y = 0 x - y = 8 What is the solution of the system shown? (-8, 12) (8, - 12) (8, 12)

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  1. 22 January, 10:37
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    see explanation

    Step-by-step explanation:

    Given the 2 equations

    x + y = 0 → (1)

    x - y = 8 → (2)

    Adding the 2 equations term by term eliminates the term in y, that is

    (x + x) + ( - y + y) = (8 + 0), that is

    2x = 8 (divide both sides by 2)

    x = 4

    Substitute x = 4 into (1) for corresponding value of y

    4 + y = 0 (subtract 4 from both sides)

    y = - 4

    Solution is (4, - 4)
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