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anonymous

  • one year ago

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

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  1. SolomonZelman
    • one year ago
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    i would just use elimination after dividing the second equation by 2.

  2. SolomonZelman
    • one year ago
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    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).

  3. SolomonZelman
    • one year ago
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    Do you have to (like just must) to use matrix to solve it?

  4. anonymous
    • one year ago
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    I think its inconsistent because it can't be A. or B.

  5. SolomonZelman
    • one year ago
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    Can you tell me how many solutions it has?

  6. SolomonZelman
    • one year ago
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    \(\large\color{black}{ \displaystyle 2x + 4y = 16 \\ -4x – 8y = 32 }\) divide the second equation by -2 and re-write the system of equations for me please.

  7. anonymous
    • one year ago
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    If I graph the equations they never cross so it would be inconsistent, right?

  8. SolomonZelman
    • one year ago
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    yes.

  9. SolomonZelman
    • one year ago
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    but you should obtain that result not by graphing

  10. SolomonZelman
    • one year ago
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    you should have solved it. i would have helped you.

  11. SolomonZelman
    • one year ago
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    i mean if you are still willing to go through it....

  12. anonymous
    • one year ago
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    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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