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anonymous

  • 4 years ago

Solve the system by using elimination or elimination with multiplication. 3x - 2y = 9 and -3x + 2y = -9 A. (3, 0) B. (5, 6) C. (1, -3) D. no solution E. infinitely many solutions

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  1. anonymous
    • 4 years ago
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    I think it's A or E.

  2. anonymous
    • 4 years ago
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    it is D

  3. anonymous
    • 4 years ago
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    A and C works =0, so wouldnt it be many solutions

  4. anonymous
    • 4 years ago
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    i thought so but then I looked up the definition of infinitely many solutions and it said that it meant tht u can never run out of possible solutions..so then I had second thoughts.

  5. anonymous
    • 4 years ago
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    sorry how does C work, I think it is just A

  6. anonymous
    • 4 years ago
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    D is not right

  7. anonymous
    • 4 years ago
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    Lol, i think i am confusing you, yes C does work

  8. anonymous
    • 4 years ago
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    yea u r kind of confusing me..u just named three answers. :) lol

  9. anonymous
    • 4 years ago
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    that is tree lee, mmm im lost now lol

  10. anonymous
    • 4 years ago
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    hahahaahha, am sorry. :D well when i trying susbtitution, I got the answer 3,0 i dont know how u can, get 1,-3, but when u plug it in then it is a solution. so i think is it infinite solutions.

  11. anonymous
    • 4 years ago
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    i solved for x, and plug it into other equations- i got 0.. so no solution =0

  12. anonymous
    • 4 years ago
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    I definitely know tht no solution is wrong but I think it is infinitely solution...So we r going to go with E.

  13. anonymous
    • 4 years ago
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    i have a graphing calculator, i will solve the problem now. wait

  14. anonymous
    • 4 years ago
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    okay

  15. anonymous
    • 4 years ago
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    i had calculation wrong, i change my answer to infinity lol

  16. anonymous
    • 4 years ago
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    lol iHelp

  17. anonymous
    • 4 years ago
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    So is it D Luis?

  18. anonymous
    • 4 years ago
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    (4.5,6) is another solution =0

  19. anonymous
    • 4 years ago
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    we just have to wait for Sal to c if we r right.

  20. anonymous
    • 4 years ago
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    ok it is E, system has infinite solutions, becuase in fact the two lines are the same, if you try and isolate for y, in both cases you will get the same line y=(-9+3x)/2. Hence, the two lines are on top of each other and they interesct at infinite points, this is how you have infinit solution.

  21. anonymous
    • 4 years ago
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    clear?

  22. anonymous
    • 4 years ago
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    yea i get now..thts wat I thought it was..but thnk u for checking.

  23. anonymous
    • 4 years ago
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    same line?,, one has negative slope, and the other is positive....

  24. anonymous
    • 4 years ago
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    let me check one more time

  25. anonymous
    • 4 years ago
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    no, they are the same line. Try to isolate for y for both lines

  26. anonymous
    • 4 years ago
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    yea they r the same line...he's right and so am I so we r going with E.

  27. anonymous
    • 4 years ago
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    sry but i still dont get same line >.<

  28. anonymous
    • 4 years ago
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    lol, the signs are confusing. i was checking like 3 times. try and get y on its own and everything to the right side.

  29. anonymous
    • 4 years ago
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    by graphing wat i got for those equations... i got (3,0) as solutions now--- btw, u just solve for y in those 2 equation right ?

  30. anonymous
    • 4 years ago
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    nvm 4th check, i got same line-- blame the SIGNs-- thanks

  31. anonymous
    • 4 years ago
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    haha np :P

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