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25 May, 23:51

Solving systems of equations by substitution y=9*-9 y=9

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Answers (2)
  1. 26 May, 02:25
    0
    Okay, you substitute the y in y=9x-9. It gives us, 9=9x-9. you add nine to both sides to eliminate the - 9 on the right side of the equation. So far we have, 18=9x. Divide both sides by 9. We get 2=x. And thats your answer.
  2. 26 May, 03:16
    0
    Y = 9x - 9

    y = 9

    9 = 9x - 9

    + 9 + 9

    18 = 9x

    9 9

    2 = x

    y = 9x - 9

    y = 9 (2) - 9

    y = 18 - 9

    y = 9

    (x, y) = (2, 9)
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