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Betty W
Betty W asked in Science & MathematicsMathematics · 9 years ago

9th grade math solving systems using substition?

3x + y = 10

y= -3x +4

5 Answers

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  • tishowns
    9 years ago
    Favorite Answer

    3x + -3x + 4 = 10

    -4

    3x+-3x =6

    x=6

    I thinkkk

  • Anonymous
    9 years ago

    1. 3x + y = 10 => y = 10 - 3x

    2. y = -3x + 4

    3. substitute 1st step into 3rd step : 10 - 3x = -3x + 4

    4. 10 - 4 = -3x - (-3x )

    5. 6 = 0

    => No solution

    I'm sure this is the answer !

  • vagueship
    9 years ago

    3x + (-3x + 4) = 10

    4 = 10

    No answer

  • Jenny
    9 years ago

    3x+y=10

    y=-3x+10

    Substitute 3x+10 into the equation y=-3x+4

    so...

    3x+10=-3x=4 and solve for x

    after solving for x plug x in for one of the equations and solve for y

    DONE

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  • plays_poorly...
    Lv 7
    9 years ago

    3x + y = 10--->y = -3x + 10

    y= -3x +4

    ----------------------------------

    These two curves are parallel; they do not intersect. There are o solutions.

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