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anonymous

  • one year ago

MEDALS!!!! PLEASE HELP!!!!! PLEASE!!!! In the function f(x)=x^2.... How does a decrease of 1 in the independent variable x affect f(x)? A. f(x) will have a change of 1-2x B. f(x) will have a change of x^2-2x+1 C. f(x) will have a change of 2x+1 D. f(x) will have a change of x^2

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  1. anonymous
    • one year ago
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    @Schen421

  2. anonymous
    • one year ago
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    @Loser66

  3. anonymous
    • one year ago
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    I am thinking that it may be A

  4. anonymous
    • one year ago
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    I'm actually not sure what it's trying to ask, hold on.

  5. anonymous
    • one year ago
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    what would happened if you decreased x by 1... i think

  6. anonymous
    • one year ago
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    x^2 would be a parabola when graphed, if you were to minus 1 to x^2, then the y-intercept of the graph would shift down by 1 unit

  7. anonymous
    • one year ago
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    So it is A?

  8. anonymous
    • one year ago
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    Won't be able to give an answer, not too sure about this topic, sorry man!

  9. anonymous
    • one year ago
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    Uhhhhhhh.... I have had 5 people try this question.... Hahahaha. This sucks

  10. anonymous
    • one year ago
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    do you understand it @Vocaloid ?

  11. Vocaloid
    • one year ago
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    ok, if x is decreased by one, x becomes (x-1) what happens when you plug (x-1) back into f(x)?

  12. anonymous
    • one year ago
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    it will move the parabola 1 unit to the right ?

  13. anonymous
    • one year ago
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    I don't know.I really don't understand this

  14. anonymous
    • one year ago
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    but i dont the option oO

  15. anonymous
    • one year ago
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    see*

  16. anonymous
    • one year ago
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    A. f(x) will have a change of 1-2x B. f(x) will have a change of x^2-2x+1 C. f(x) will have a change of 2x+1 D. f(x) will have a change of x^2

  17. anonymous
    • one year ago
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    OH IS IT D!?!?!? @Vocaloid

  18. Vocaloid
    • one year ago
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    no... please do what I asked you to do...

  19. anonymous
    • one year ago
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    f(x)-f=x^2 ???

  20. Vocaloid
    • one year ago
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    no, please substitute (x-1) for x in the equation f(x)

  21. anonymous
    • one year ago
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    f(x-1)=x^2

  22. Vocaloid
    • one year ago
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    no, please check the right side of the equation replace x with (x-1)

  23. anonymous
    • one year ago
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    f(x-1)=x-1^2??

  24. Vocaloid
    • one year ago
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    almost, you're forgetting the parentheses

  25. anonymous
    • one year ago
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    f(x-1)=(x-1)^2

  26. Vocaloid
    • one year ago
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    right! now, try expanding (x-1)^2

  27. anonymous
    • one year ago
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    x^2-2x+1

  28. anonymous
    • one year ago
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    that would make it B?!

  29. Vocaloid
    • one year ago
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    great! so, the original equation is f(x) = x^2 the new equation is f(x-1) = x^2 - 2x + 1 what CHANGED? what do f(x) and f(x-1) have in common? what is different?

  30. Vocaloid
    • one year ago
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    Sorry, no, the answer is not B, please keep trying

  31. Vocaloid
    • one year ago
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    What makes x^2 different than x^2 - 2x + 1 what part is different about the second equation?

  32. anonymous
    • one year ago
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    -2x+1

  33. Vocaloid
    • one year ago
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    right! so which answer do you think it is?

  34. anonymous
    • one year ago
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    C

  35. Vocaloid
    • one year ago
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    hint: -2x +1 = 1-2x

  36. anonymous
    • one year ago
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    I mean A!!

  37. Vocaloid
    • one year ago
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    great! you got it!!!

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