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20 August, 06:42

Which of the following is a solution to the system of equations?

y = 3x-2

6 + y=-x

+5
Answers (2)
  1. 20 August, 06:50
    0
    x=-1 y = - 5

    Step-by-step explanation:

    y = 3x-2

    6 + y=-x

    Substitute the first equation into the second equation

    6 + y = -x

    6 + (3x-2) = - x

    Combine like terms

    4 + 3x = - x

    Subtract 3x from each side

    4 + 3x - 3x = - x - 3x

    4 = - 4x

    Divide by - 4

    4/-4 = - 4x/-4

    -1 = x

    Now we need to find y

    y = 3x-2

    y = 3 (-1) - 2

    = - 3-2

    = - 5
  2. 20 August, 07:11
    0
    (-1, - 5)

    Step-by-step explanation:

    We can solve this system using substitution. y = 3x - 2, so replace "y" in the second equation with "3x - 2:"

    6 + (3x - 2) = - x, or 6 + 3x - 2 = - x

    Group like terms together: 3x + x = - 6 + 2.

    Then 4x = - 4, and x = - 1.

    Subst. - 1 for x in the first equation: y = 3 (-1) - 2, or y = - 5.

    Then the solution is (-1, - 5).
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