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sktjell Group Title

The reciprocal function f(x)=1/x satisfies which of the following statements? Check all that apply.. A. It exhibits inverse variation. B. Its range is all real numbers. C. It exhibits direct variation. D. Its domain is all real numbers except for zero.

  • 2 years ago
  • 2 years ago

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  1. imagreencat Group Title
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    Go to the choices one by one. Do you think A is correct?

    • 2 years ago
  2. sktjell Group Title
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    I dont understand what any of them mean, so i couldnt tell you, im really slow in math, :'(

    • 2 years ago
  3. experimentX Group Title
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    Jeez .... you are trying to tackle question without knowing what there terms are??

    • 2 years ago
  4. sktjell Group Title
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    i just dont understand and i have so much to do! IM SO SORRY :(

    • 2 years ago
  5. experimentX Group Title
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    first search what what are direct variations and inverse variations ...

    • 2 years ago
  6. sktjell Group Title
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    ok

    • 2 years ago
  7. experimentX Group Title
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    http://www.youtube.com/watch?v=92U67CUy9Gc

    • 2 years ago
  8. sktjell Group Title
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    In an inverse variation, the values of the two variables change in an opposite manner - as one value increases, the other decreases.

    • 2 years ago
  9. sktjell Group Title
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    can u dumb that down for me ... :/

    • 2 years ago
  10. sktjell Group Title
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    @experimentX Im a senior i just finished school and 50 assigments with questions like these in them before june 3rd or i cant walk with my class on june 6th, This because i failed ceramics by 2 points because the teacher hatted me and gave me a failing grade, they then put me in a math class online like im doing now to help me fill in the half a credit i need to graduate so im begging you please give me the answer, i learned all this when i was a freshman but i havent done it in a while i have so much to do in so little time and re learning things is just not ganna help PLEASE :(

    • 2 years ago
  11. experimentX Group Title
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    I suggest you focus on learning ... what will you do with answers if you don't know that they mean?

    • 2 years ago
  12. experimentX Group Title
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    finish that video ... i'll give you half answer

    • 2 years ago
  13. sktjell Group Title
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    omg :'( this only question 4 of this stupid thing ive been on here for hours, and im only on question 4! ill never get this done in a week. (Sigh) i appreciate your help, but im sorry, watching a 9 minute video does not help me with time, i need to finish this fast. Thanks i really appreciate it though u also helped me on other questions which i do appreciate. I REALLY DO.

    • 2 years ago
  14. imagreencat Group Title
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    Well, it says that inverse variation involves two quantities wherein as the other one increases, the other decreases. Take for example: 8 workers paint a house for 5 days; 10 workers paint the house for 2 days. Since there are more workers, the work could be done in a shorter time. That's inverse variation. Do you somehow get it?

    • 2 years ago
  15. sktjell Group Title
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    okay yea.

    • 2 years ago
  16. experimentX Group Title
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    so what do you think ??? does f(x) increase or decrease with x??

    • 2 years ago
  17. sktjell Group Title
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    increase?

    • 2 years ago
  18. experimentX Group Title
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    f(1) = 1/1 = 1 f(10) = 1/10 = 0.1 do you think it is increasing

    • 2 years ago
  19. imagreencat Group Title
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    Well, with the denominator increasing, what do you think will happen to the quotient of 1 and the increasing denominator?

    • 2 years ago
  20. imagreencat Group Title
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    Just think of it this way, the number 1 is divided into greater and greater parts. So great that it will reach infinity! Do you now think it is still increasing?

    • 2 years ago
  21. sktjell Group Title
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    ooh no its decreasing

    • 2 years ago
  22. sktjell Group Title
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    its breaking up into smaller numbers to make a bigger number

    • 2 years ago
  23. experimentX Group Title
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    well ... this is called inverse variation!!

    • 2 years ago
  24. sktjell Group Title
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    okay so is that it?

    • 2 years ago
  25. experimentX Group Title
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    half part

    • 2 years ago
  26. imagreencat Group Title
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    Yes, well A is correct. Go check the other ones. Tell us what you think of each option.

    • 2 years ago
  27. experimentX Group Title
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    since it's inverse variation ... it cannot be direct variation now two option left

    • 2 years ago
  28. sktjell Group Title
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    i think b is right

    • 2 years ago
  29. experimentX Group Title
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    don't make guess ... i'm not gonna answer

    • 2 years ago
  30. experimentX Group Title
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    first search for what's "real number"

    • 2 years ago
  31. sktjell Group Title
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    B IS RIGHT BECAUSE IT DOES HAVE REAL NUMBERS DOSENT IT

    • 2 years ago
  32. sktjell Group Title
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    i know what real numbers are, they are every number basically

    • 2 years ago
  33. experimentX Group Title
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    is pi a real number??

    • 2 years ago
  34. experimentX Group Title
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    is 1 and 10 real number??

    • 2 years ago
  35. sktjell Group Title
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    yes

    • 2 years ago
  36. experimentX Group Title
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    *are ...

    • 2 years ago
  37. experimentX Group Title
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    is 0 real number??

    • 2 years ago
  38. sktjell Group Title
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    yes

    • 2 years ago
  39. experimentX Group Title
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    find f(x) at 0

    • 2 years ago
  40. sktjell Group Title
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    its not there

    • 2 years ago
  41. imagreencat Group Title
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    Why is it not there?

    • 2 years ago
  42. imagreencat Group Title
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    Because..

    • 2 years ago
  43. sktjell Group Title
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    listen guys i appreciate you guys tring to teach me but again, this is question 4 and weve been doing this for about 20 minutes now. i still have 6 more questions to do and then after that i have 50 more quizes like this to do in 7 days. so ill just guess and fail like i did before but i really apprciate you guys helping me with the last answer.

    • 2 years ago
  44. experimentX Group Title
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    ah ... i misread ... i thought it was domain

    • 2 years ago
  45. sktjell Group Title
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    honestly i would have sat there and learned it but i just dont have the time

    • 2 years ago
  46. experimentX Group Title
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    okay ... the range is all over the real numbers now we have only one statement

    • 2 years ago
  47. sktjell Group Title
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    I GUESSED A B AND D THANKS GUYS.

    • 2 years ago
  48. imagreencat Group Title
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    The range can't be zero. So the range is not all real numbers.

    • 2 years ago
  49. experimentX Group Title
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    i'm still not sure if you can consider infinity to be real numbers or not generally ... i have said lim x->inf 1/x = 0

    • 2 years ago
  50. imagreencat Group Title
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    Well yeah. But as far as I can remember, my calc teacher told me that infinity is not a number. That's why you can't close bracket the infinity sign. :)

    • 2 years ago
  51. experimentX Group Title
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    I guess you are right http://en.wikipedia.org/wiki/Extended_real_number_line there's been a long debate on infinity ... observing it only made me confused still ... lim x-> inf ... will never make 0 on range

    • 2 years ago
  52. experimentX Group Title
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    well ... A and D are your answer

    • 2 years ago
  53. imagreencat Group Title
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    Yup! =)) Cause that is just the limit and we are not actually sure if it will be 0.

    • 2 years ago
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