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21 January, 05:00

Solve the system by substitution.

y = 2x + 5

y = 3x - 1

+1
Answers (1)
  1. 21 January, 05:26
    0
    x = - 3

    y = 17

    Step-by-step explanation:

    Solving for x:

    Plug in 3x - 1 for y:

    3x - 1 = 2x + 5

    Then subtract 2x from both sides:

    x - 1 = 5

    Then, add 1 to both sides:

    x = 6

    Solving for y:

    Plug in 6 for x in one of the 2 equations (it doesn't matter which one).

    y = 2 (6) + 5

    y = 12 + 5

    y = 17

    If you're still unsure, you can check with the other equation:

    y = 3 (6) - 1

    y = 18 - 1

    y = 17
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