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anonymous

  • 5 years ago

Again substitution method! 2x+9y=66 -6x+y=26 what is the order pair?

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  1. anonymous
    • 5 years ago
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    Solve for one variable and then plug that in to the other equation to get an equation with one unknown.

  2. anonymous
    • 5 years ago
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    ok can you please help me more with that

  3. anonymous
    • 5 years ago
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    Ok so I would take -6x+y=26 and solve for y and then plug that into 2x+9y=66 for y and solve for x.

  4. anonymous
    • 5 years ago
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    Well that being said I got y=6x=26 for the y= and for the x= I got y/6-13/3 is that correct cause I am not positive

  5. anonymous
    • 5 years ago
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    Not quite sure what you did, but I'll start working it out. Maybe you can see it that way. :)

  6. anonymous
    • 5 years ago
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    y=6x+26 so then the other equation becomes 2x+9(6x+26)=66

  7. anonymous
    • 5 years ago
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    Thanks :)

  8. anonymous
    • 5 years ago
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    Can you solve for x from there?

  9. anonymous
    • 5 years ago
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    -3

  10. anonymous
    • 5 years ago
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    Yahtzee! Now plug in -3 for x into let's say y=6x+26 to get the y value. Then your ordered pair is (x,y)

  11. anonymous
    • 5 years ago
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    8

  12. anonymous
    • 5 years ago
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    -3,8 is the order pair

  13. anonymous
    • 5 years ago
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    So how do you know which equation to put in so that you get the right answer or does it work with both?

  14. anonymous
    • 5 years ago
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    It will work with both.

  15. anonymous
    • 5 years ago
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    I hope that is right I gave you a medal for that thanks a bunch I am trying to learn this math and it is not easy to me but I am welling to set here til I can work it out with someone

  16. anonymous
    • 5 years ago
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    That was correct thanks again!!!!!

  17. anonymous
    • 5 years ago
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    Thanks. It is right :) Solving systems of equations by substitution method is the same process every time. No problem.

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