For the following system, if you isolated x in the second equation to use the substitution method, what expression would you substitute into

Question

For the following system, if you isolated x in the second equation to use the substitution method, what expression would you substitute into the first equation?
3x + y = 8
−x − 2y = −10

A.) −2y + 10
B.) 2y + 10
C.) 2y − 10
D.) −2y − 10

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Ruby 2 weeks 2021-09-14T23:57:27+00:00 1 Answer 0

Answers ( )

    0
    2021-09-14T23:58:56+00:00

    Answer:

    A.) −2y + 10

    Step-by-step explanation:

    −x − 2y = −10

    Add 2y to both sides.

    -x = 2y – 10

    Multiply both sides by -1.

    x = -2y + 10

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