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2 February, 05:20

Solve the system by substitution.

-8x - y = 30

-2y = x

+3
Answers (1)
  1. 2 February, 06:37
    0
    Solution: (-4, 2), x = - 4 and y = 2

    Step-by-step explanation:

    -8x - y = 30

    -2y = x

    Substitute for x

    -8 * (-2y) - y = 30

    16y - y = 30

    15y = 30

    y = 30/15 = 2

    Then x = - 2y = - 2 * (2) = - 4

    Solution: (-4, 2), x = - 4 and y = 2
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