Solve the system of equations using the substitution method. -3x – y = 15 y = -8x​

Question

Solve the system of equations using the substitution method.
-3x – y = 15
y = -8x​

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Sarah 4 months 2022-01-21T09:12:45+00:00 1 Answer 0 views 0

Answers ( )

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    2022-01-21T09:14:42+00:00

    Answer:

    x = 3, y = -24

    Step-by-step explanation:

    -3x – y = 15

    y = -8x

    Substitute the value of y into the first equation.

    -3x – (-8x) = 15

    -3x + 8x = 15

    5x = 15

    x = 3

    Put the value of x into the second equation.

    y = -8 * 3

    y = -24

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