anonymous
  • anonymous
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
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
I think it's A or E.
anonymous
  • anonymous
it is D
anonymous
  • anonymous
A and C works =0, so wouldnt it be many solutions

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anonymous
  • anonymous
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.
anonymous
  • anonymous
sorry how does C work, I think it is just A
anonymous
  • anonymous
D is not right
anonymous
  • anonymous
Lol, i think i am confusing you, yes C does work
anonymous
  • anonymous
yea u r kind of confusing me..u just named three answers. :) lol
anonymous
  • anonymous
that is tree lee, mmm im lost now lol
anonymous
  • anonymous
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.
anonymous
  • anonymous
i solved for x, and plug it into other equations- i got 0.. so no solution =0
anonymous
  • anonymous
I definitely know tht no solution is wrong but I think it is infinitely solution...So we r going to go with E.
anonymous
  • anonymous
i have a graphing calculator, i will solve the problem now. wait
anonymous
  • anonymous
okay
anonymous
  • anonymous
i had calculation wrong, i change my answer to infinity lol
anonymous
  • anonymous
lol iHelp
anonymous
  • anonymous
So is it D Luis?
anonymous
  • anonymous
(4.5,6) is another solution =0
anonymous
  • anonymous
we just have to wait for Sal to c if we r right.
anonymous
  • anonymous
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.
anonymous
  • anonymous
clear?
anonymous
  • anonymous
yea i get now..thts wat I thought it was..but thnk u for checking.
anonymous
  • anonymous
same line?,, one has negative slope, and the other is positive....
anonymous
  • anonymous
let me check one more time
anonymous
  • anonymous
no, they are the same line. Try to isolate for y for both lines
anonymous
  • anonymous
yea they r the same line...he's right and so am I so we r going with E.
anonymous
  • anonymous
sry but i still dont get same line >.<
anonymous
  • anonymous
lol, the signs are confusing. i was checking like 3 times. try and get y on its own and everything to the right side.
anonymous
  • anonymous
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 ?
anonymous
  • anonymous
nvm 4th check, i got same line-- blame the SIGNs-- thanks
anonymous
  • anonymous
haha np :P

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