Use substitution to determine the solution of the system of equations. y = −2x − 7 2y − x = 1 A. (−1,0) B.

Question

Use substitution to determine the solution of the system of equations.
y = −2x − 7
2y − x = 1

A. (−1,0)
B. (212,−28)
C. (−6,−52)
D. (−3,−1)

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3 months 2022-02-03T04:32:29+00:00 2 Answers 0 views 0

Answers ( )

    0
    2022-02-03T04:33:39+00:00

    ~Answer:  ✎D. (−3,−1)

    ✎Your answer should be  

    D. (−3,−1)

    ~Step-by-step explanation:

    ✐1st Equation: y = -2x -7

    ✐2nd Equation: 2y – x = 1

        ✄ From 1 we have y = -2x – 7 put in 2

     2 ( -2x – 7 ) -x = 1   4x – 14 – x = 1- 5x = 1 + 14                                

                                             ~~~~~~~~~~~~PLease mark me as brainliest  ♡

    X = 15/- X= – 3

          ✄Now we have to put in equation 1

        Y = – 2 ( -3) – | Y= 6 – |Y = – 1

    THEN YOUR FINAL ANSWER IS (−3,−1) WICH IS D

    ✄brainliest?? ✄

    0
    2022-02-03T04:34:13+00:00

    Answer:

    Option D is correct

    ( -3, -1 )

    Step-by-step explanation:

    equation 1 is

    y = -2x -7

    and equation 2 is

    2y – x = 1

    so from 1 we have y = -2x – 7 put in 2

    2 ( -2x – 7 ) -x = 1

    -4x – 14 – x = 1

    – 5x = 1 + 14

    X = 15/-5

    X= – 3

    put in equation 1

    Y = – 2 ( -3) – 7

    Y= 6 – 7

    Y = – 1

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