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18 March, 16:09

Graph the system by using technology.

What is the x-coordinate of the solution?

Round to the nearest hundredth.

y=4x+9

y=-1.8x

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Answers (1)
  1. 18 March, 18:21
    0
    Y = 4x + 9

    y = - 1.8x

    4x + 9 = - 1.8x

    + 1.8x + 1.8x

    5.8x + 9 = 0

    - 9 - 9

    5.8x = - 9

    5.8 5.8

    x = - 1⁶/₂₉

    y = - 1.8x

    y = - 1.8 (-1⁶/₂₉)

    y = 2²³/₂₉

    (x, y) = (-1⁶/₂₉, 2²³/₂₉)
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