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mckenzieandjesus

  • one year ago

What is the solution of the system of equations? y = –4x + 10 y = –2x – 6 (–2.67, 20.67) (–22, 8) (–2, –2) (8, –22)

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  1. mckenzieandjesus
    • one year ago
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    @Mehek14 do you know to do this?

  2. Mehek14
    • one year ago
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    yes I do :]

  3. mckenzieandjesus
    • one year ago
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    ok :)

  4. Mehek14
    • one year ago
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    put the value of y in the second equation for y in the first equation \(\bf{-2x-6=-4x+10}\)

  5. mckenzieandjesus
    • one year ago
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    ok

  6. Mehek14
    • one year ago
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    now solve for x

  7. mckenzieandjesus
    • one year ago
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    so the -2x-6=-4x+10 is how u add y in the second equation to the first?

  8. Mehek14
    • one year ago
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    I put the second equation for y in the first equation

  9. Mehek14
    • one year ago
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    so solve for x

  10. mckenzieandjesus
    • one year ago
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    6?

  11. Mehek14
    • one year ago
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    |dw:1443827313138:dw|

  12. Mehek14
    • one year ago
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    my ad \(\bf{-16=-2x}\)

  13. mckenzieandjesus
    • one year ago
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    ohh ok

  14. mckenzieandjesus
    • one year ago
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    I forgot how to do it, thanku

  15. Mehek14
    • one year ago
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    now can you do the last step?

  16. mckenzieandjesus
    • one year ago
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    what is the next step?

  17. Mehek14
    • one year ago
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    -16=-2x how can you solve for x?

  18. mckenzieandjesus
    • one year ago
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    multiply something?

  19. Mehek14
    • one year ago
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    divide -16/-2 = x

  20. mckenzieandjesus
    • one year ago
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    -8

  21. Mehek14
    • one year ago
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    negative/negative = positive

  22. Mehek14
    • one year ago
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    so +8

  23. mckenzieandjesus
    • one year ago
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    ok

  24. mckenzieandjesus
    • one year ago
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    and y is -22?

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