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.

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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.

Mathematics
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Go to the choices one by one. Do you think A is correct?
I dont understand what any of them mean, so i couldnt tell you, im really slow in math, :'(
Jeez .... you are trying to tackle question without knowing what there terms are??

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i just dont understand and i have so much to do! IM SO SORRY :(
first search what what are direct variations and inverse variations ...
ok
http://www.youtube.com/watch?v=92U67CUy9Gc
In an inverse variation, the values of the two variables change in an opposite manner - as one value increases, the other decreases.
can u dumb that down for me ... :/
@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 :(
I suggest you focus on learning ... what will you do with answers if you don't know that they mean?
finish that video ... i'll give you half answer
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.
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?
okay yea.
so what do you think ??? does f(x) increase or decrease with x??
increase?
f(1) = 1/1 = 1 f(10) = 1/10 = 0.1 do you think it is increasing
Well, with the denominator increasing, what do you think will happen to the quotient of 1 and the increasing denominator?
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?
ooh no its decreasing
its breaking up into smaller numbers to make a bigger number
well ... this is called inverse variation!!
okay so is that it?
half part
Yes, well A is correct. Go check the other ones. Tell us what you think of each option.
since it's inverse variation ... it cannot be direct variation now two option left
i think b is right
don't make guess ... i'm not gonna answer
first search for what's "real number"
B IS RIGHT BECAUSE IT DOES HAVE REAL NUMBERS DOSENT IT
i know what real numbers are, they are every number basically
is pi a real number??
is 1 and 10 real number??
yes
*are ...
is 0 real number??
yes
find f(x) at 0
its not there
Why is it not there?
Because..
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.
ah ... i misread ... i thought it was domain
honestly i would have sat there and learned it but i just dont have the time
okay ... the range is all over the real numbers now we have only one statement
I GUESSED A B AND D THANKS GUYS.
The range can't be zero. So the range is not all real numbers.
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
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. :)
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
well ... A and D are your answer
Yup! =)) Cause that is just the limit and we are not actually sure if it will be 0.

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