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8 December, 03:11

Use substitution to solve the system.

y = 3x + 16

4x - 5y = - 25

+5
Answers (2)
  1. 8 December, 06:59
    0
    x=-5

    y=1

    Step-by-step explanation:

    4x-5y=-25

    4x-5 (3x+16) = -25

    -11x-80=-25

    -11x-80+80=-25+80

    -11=55

    -11x/-11=55/-11

    x=-5

    y=3x+16

    y=3 (-5) + 16

    y=-15+16

    y=1
  2. 8 December, 07:09
    0
    (-5,1)

    Step-by-step explanation:

    y=3x+16

    4x-5y=-25

    substitute the given value of y into the equation.

    4x-5 (3x+16) = -25

    solve

    x=5

    substitute the given value of x into the equation.

    y=3x (-5) + 16

    solve

    y=1

    (-5,1)
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