math

identify the choice that best completes the statement or answers the question.

For questions 1-3, what is the solution of the systems? Use subsitution.

1. y = x + 6
y = 2x

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  1. Well ,it told you that y = 2x so substitute 2x for y
    2x = x + 6
    x = 6
    then y = 2x = 12
    =============
    check
    12 = 6 + 6 sure enough

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  2. what is the anwsers to these?

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  3. Unit 7, Lesson 2.

    Identify the choice that best completes the statement or answers the questions.
    For questions 1-3, what is the solution of the system? Use substitution.

    1. y=x+6
    y=2x
    *A. (6, 12)*

    2. 3x+2y=7
    -3x+11=y
    *D. (5, -4)*

    3. 2x-y=-7
    4x-y=-4
    *B. (-1.5, -2)*

    For questions 4-5, how many solutions does the system have?

    4. -4y+4=x
    2x+8y=8
    *C. infinitely many solutions*

    5. 6x+2=y
    3y-18x=12
    *D. No solution*

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  4. 1.d
    2.d
    3.d
    4.c
    5.b
    6.a
    7.b
    8.c
    9.d
    10.b
    11.c
    12.b
    13.b
    14.d
    15.c
    16.b
    17.a
    18.a
    19.b
    20.a
    22.c
    23.b
    24.d
    the rest do on your own

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