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23 July, 18:46

What is the answer to y=6+4x and y=-5x-21

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Answers (2)
  1. 23 July, 20:04
    0
    Y=4x+6

    y=-5x-21

    4x+6=-5x-21

    add both sides by 5x

    also subtract both sides by 6

    9x=-27

    x=-3

    plu x=-3 in y=6+4x

    y=6-12

    y=-6
  2. 23 July, 20:11
    0
    y=6+4x

    y=-5x-21

    => 6+4x=-5x-21

    9x=-27

    x=-3

    y=6+4 * (-3) = 6-12=-6

    y=-6

    Solution: (-3; - 6)
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