anonymous
  • anonymous
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
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
@Schen421
anonymous
  • anonymous
@Loser66
anonymous
  • anonymous
I am thinking that it may be A

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More answers

anonymous
  • anonymous
I'm actually not sure what it's trying to ask, hold on.
anonymous
  • anonymous
what would happened if you decreased x by 1... i think
anonymous
  • anonymous
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
anonymous
  • anonymous
So it is A?
anonymous
  • anonymous
Won't be able to give an answer, not too sure about this topic, sorry man!
anonymous
  • anonymous
Uhhhhhhh.... I have had 5 people try this question.... Hahahaha. This sucks
anonymous
  • anonymous
do you understand it @Vocaloid ?
Vocaloid
  • Vocaloid
ok, if x is decreased by one, x becomes (x-1) what happens when you plug (x-1) back into f(x)?
anonymous
  • anonymous
it will move the parabola 1 unit to the right ?
anonymous
  • anonymous
I don't know.I really don't understand this
anonymous
  • anonymous
but i dont the option oO
anonymous
  • anonymous
see*
anonymous
  • anonymous
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
anonymous
  • anonymous
OH IS IT D!?!?!? @Vocaloid
Vocaloid
  • Vocaloid
no... please do what I asked you to do...
anonymous
  • anonymous
f(x)-f=x^2 ???
Vocaloid
  • Vocaloid
no, please substitute (x-1) for x in the equation f(x)
anonymous
  • anonymous
f(x-1)=x^2
Vocaloid
  • Vocaloid
no, please check the right side of the equation replace x with (x-1)
anonymous
  • anonymous
f(x-1)=x-1^2??
Vocaloid
  • Vocaloid
almost, you're forgetting the parentheses
anonymous
  • anonymous
f(x-1)=(x-1)^2
Vocaloid
  • Vocaloid
right! now, try expanding (x-1)^2
anonymous
  • anonymous
x^2-2x+1
anonymous
  • anonymous
that would make it B?!
Vocaloid
  • Vocaloid
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?
Vocaloid
  • Vocaloid
Sorry, no, the answer is not B, please keep trying
Vocaloid
  • Vocaloid
What makes x^2 different than x^2 - 2x + 1 what part is different about the second equation?
anonymous
  • anonymous
-2x+1
Vocaloid
  • Vocaloid
right! so which answer do you think it is?
anonymous
  • anonymous
C
Vocaloid
  • Vocaloid
hint: -2x +1 = 1-2x
anonymous
  • anonymous
I mean A!!
Vocaloid
  • Vocaloid
great! you got it!!!

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