anonymous
  • anonymous
Help please??? Solve the following system of equations using matrices. 2x + 4y = 16 -4x – 8y = 32 A. (2, 2) B. (-2, -2) C. Consistent D. Inconsistent
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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SolomonZelman
  • SolomonZelman
i would just use elimination after dividing the second equation by 2.
SolomonZelman
  • SolomonZelman
or, you can divide the second equation by -2 and then tell me what clue do you have (it's ok if you don't come up with any thoughts).
SolomonZelman
  • SolomonZelman
Do you have to (like just must) to use matrix to solve it?

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anonymous
  • anonymous
I think its inconsistent because it can't be A. or B.
SolomonZelman
  • SolomonZelman
Can you tell me how many solutions it has?
SolomonZelman
  • SolomonZelman
\(\large\color{black}{ \displaystyle 2x + 4y = 16 \\ -4x – 8y = 32 }\) divide the second equation by -2 and re-write the system of equations for me please.
anonymous
  • anonymous
If I graph the equations they never cross so it would be inconsistent, right?
SolomonZelman
  • SolomonZelman
yes.
SolomonZelman
  • SolomonZelman
but you should obtain that result not by graphing
SolomonZelman
  • SolomonZelman
you should have solved it. i would have helped you.
SolomonZelman
  • SolomonZelman
i mean if you are still willing to go through it....
anonymous
  • anonymous
I just wanted to check my answer to make sure I had done the problem correctly. Thank you for the help though <3

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