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anonymous

  • 5 years ago

Find the solution, given the replacement set. 5x - 2y = 6 {(-2, -8), (0, -3), (1, -1), (2, 4), (4, 7) A.{(-2, -8), (2, 4), (4, 7)} B.{(-2, -8), (0, -3), (4, 7)} C.{(-2, -8), (0, -3), (1, -1)} D.{(1, -1), (2, 4), (4, 7)}

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  1. amistre64
    • 5 years ago
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    so, which ordered pairs are solutions right?

  2. anonymous
    • 5 years ago
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    Yes I think so

  3. amistre64
    • 5 years ago
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    if so then we just plug them in to check :)

  4. amistre64
    • 5 years ago
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    does 1,-1 fit?

  5. anonymous
    • 5 years ago
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    I'd have to get out paper and pencil.

  6. amistre64
    • 5 years ago
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    paper and pencil are fine; but lets try this approach: 5(1) -2(-1) = 6

  7. amistre64
    • 5 years ago
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    does 5 + 2 = 6 ?

  8. anonymous
    • 5 years ago
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    no

  9. amistre64
    • 5 years ago
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    then c and d are out

  10. amistre64
    • 5 years ago
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    a nad b differ by sat (0,-3) so if that fits its b, if not its a

  11. amistre64
    • 5 years ago
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    5(0)-2(-3) = 6 ? 0 + 6 = 6 ?

  12. anonymous
    • 5 years ago
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    yeah

  13. amistre64
    • 5 years ago
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    a and b differ by say .... typing aint my forte :) then since b fits, lets use b :)

  14. amistre64
    • 5 years ago
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    since there is no "none of the above" option I assume it has to be one of those posted, so "b" seems the best candidate

  15. anonymous
    • 5 years ago
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    alright thanks!!

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