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anonymous

  • one year ago

Which of the following statements is true about the given system of linear equations? –x + y = 4 3x + y = 32 A. The system has a unique solution. B. The system has infinitely many solutions. C. The system has no solution. D. The system has two solutions.

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  1. anonymous
    • one year ago
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    Do you know how to solve these equations?

  2. anonymous
    • one year ago
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    @corruptedalice96 Not really ._.

  3. anonymous
    • one year ago
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    Let's start with -x + y = 4

  4. anonymous
    • one year ago
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    |dw:1433337440070:dw|

  5. anonymous
    • one year ago
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    |dw:1433337471082:dw|

  6. anonymous
    • one year ago
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    now you want to plug in this into 3x + y = 32

  7. anonymous
    • one year ago
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    |dw:1433337577208:dw|

  8. anonymous
    • one year ago
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    Combine like terms..

  9. anonymous
    • one year ago
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    |dw:1433337656891:dw|

  10. anonymous
    • one year ago
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    |dw:1433337705639:dw|

  11. anonymous
    • one year ago
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    |dw:1433337733272:dw|

  12. anonymous
    • one year ago
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    We've got the first part down.

  13. anonymous
    • one year ago
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    Now input x into -x + y = 4

  14. anonymous
    • one year ago
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    |dw:1433337793286:dw|

  15. anonymous
    • one year ago
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    solutions x and y mean there are ultimately 2 solutions

  16. anonymous
    • one year ago
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    Actually 1 solution, my mistake

  17. anonymous
    • one year ago
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    So it's A ? Because it only has one solution, therefore a unique solution?

  18. anonymous
    • one year ago
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    Yes

  19. anonymous
    • one year ago
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    Thank you ^^

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