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juanaandrea

  • 2 years ago

-y - 2 = x + 1 is a decreasing function

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  1. raffle_snaffle
    • 2 years ago
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    make it a function of y respect to x

  2. abb0t
    • 2 years ago
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    Yes. If you put it in the form: \(\sf \color{red}{y=mx+b}\) You will see

  3. juanaandrea
    • 2 years ago
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    ok so it is increasing y=-2x+1

  4. raffle_snaffle
    • 2 years ago
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    what makes you say it's increasing?

  5. juanaandrea
    • 2 years ago
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    sorry decreasing

  6. abb0t
    • 2 years ago
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    Yes.

  7. raffle_snaffle
    • 2 years ago
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    okay right!

  8. anonymous
    • 2 years ago
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    god help us it is not your fault, but \[-y - 2 = x + 1\] is not a function at all it is an equation

  9. abb0t
    • 2 years ago
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    It's a linear function, no?

  10. juanaandrea
    • 2 years ago
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    I have it in my homework it says if it is increasing or decreasing

  11. juanaandrea
    • 2 years ago
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    yes

  12. anonymous
    • 2 years ago
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    no it is not a linear "function" it is an equation for a line thus beginning the long confusion between the concept of "function" and "equation" it is not your fault just bad math teachers

  13. juanaandrea
    • 2 years ago
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    aaaa

  14. anonymous
    • 2 years ago
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    anyway what they want you to do is solve for \(y\) \[-y - 2 = x + 1\] \[-y=x+3\] \[y=-x-3\]

  15. juanaandrea
    • 2 years ago
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    but is it increasing or decreasing

  16. anonymous
    • 2 years ago
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    and then say "since the slope is negative, it is decreasing

  17. anonymous
    • 2 years ago
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    \[y=-x-3\\y=mx+b\] \[m=-1\] so it is decreasing

  18. juanaandrea
    • 2 years ago
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    ok thank you. was not sure

  19. anonymous
    • 2 years ago
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    yw sorry you have such a crappy book

  20. juanaandrea
    • 2 years ago
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    y = -5x + 4 so this one is increasing right

  21. juanaandrea
    • 2 years ago
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    i meant decreasing sorry didnt see the -

  22. anonymous
    • 2 years ago
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    yeah, decreasing

  23. juanaandrea
    • 2 years ago
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    k thanks

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