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anonymous

  • one year ago

Solve using linear combination. x – y = –7 x + y = 7 (–7, 0) (7, 0) (0, 7) (0, –7)

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  1. pooja195
    • one year ago
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    elimination basically opposites cancel so what 2 variables can we get rid of right away?

  2. pooja195
    • one year ago
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    Any ideas?

  3. anonymous
    • one year ago
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    subtract 'y'?

  4. pooja195
    • one year ago
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    yep so we have 2x=0 and you get x=0

  5. pooja195
    • one year ago
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    (0) – y = –7

  6. pooja195
    • one year ago
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    0-y= -7

  7. pooja195
    • one year ago
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    Solve.

  8. anonymous
    • one year ago
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    So it would be 'D'? i think.

  9. pooja195
    • one year ago
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    no quite remeber a negative divded by a negative is positive to -7/-y=?

  10. anonymous
    • one year ago
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    Oh! so positive 7 then.

  11. pooja195
    • one year ago
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    yes :)

  12. anonymous
    • one year ago
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    Would the 0 still be before the 7? (0,7) or (7,0)

  13. pooja195
    • one year ago
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    yes

  14. pooja195
    • one year ago
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  15. anonymous
    • one year ago
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    Thank you :)

  16. pooja195
    • one year ago
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    :)

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