## anonymous one year ago Is my work correct? Find x when f(x)=1. (This means find the input that gives an output of 1.) f(x)=2/2+2=2/4=2/2=1

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1. Nnesha

y=input x=output

2. Nnesha

what is f(x) function ?

3. anonymous

f(x)= y

4. anonymous

the function is 2/x+2

5. Nnesha

is it $\frac{ 2 }{ x }+2 ~~\rm or \frac{ 2 }{ x+2 }$

6. anonymous

the one after or (the second one)

7. Nnesha

okay cool so $\huge\rm f(x) = \frac{ 2 }{ x+2 }$ f(x) =1 so substitute f(x) for 1 $\rm 1=\frac{ 2 }{ x+2 }$ solve for x

8. anonymous

!!OH Duh im finding x so i did it wrong right?

9. anonymous

i said that x was 2 according to my calculations

10. Nnesha

yes right i don't know why u replaced x with 2

11. anonymous

x is 1

12. Nnesha

okay substitute x for 1 to check ur work $\huge\rm 1=\frac{ 2 }{ \color{ReD}{1}+2 }$ both sides are equal ?

13. anonymous

NO

14. anonymous

OHHHH OK SO THEY HAVE TO EQUAL THE SAME!!! THANK YOU SO MUCH IM NEW TO THIS

15. anonymous

:di got it let me try another #

16. Nnesha

so no x isn''t one yes right you should check ur answer if you get equal sides then yes one is right if both sides aren't equal then no

17. anonymous

ok but there is one question where it says x=4 but when i plugged in 4 it wasnt equal

18. anonymous

|dw:1441162289198:dw|

19. anonymous

f(8) is not equal to 3 or 2/6

20. Nnesha

|dw:1441162547995:dw| bot sides are equal ?

21. Nnesha

both*

22. Nnesha

2/6 isn't 3..

23. anonymous

im so lost right now , i got 3 because i simplified and 2x3=6

24. Nnesha

why did you multiply 2 times 3 ?

25. anonymous

it said find f(8) this means find the output of the function when x=4

26. Nnesha

it's $\frac{ 2 }{ 4+2 } =\frac{ 2 }{ 6}$

27. anonymous

oh i didnt but that was just the work for the division problem

28. anonymous

yeah thats what i got and it isnt equal so im confused right now

29. Nnesha

i'm confused take a screenshot plz

30. anonymous

i cant sorry but let me draw it

31. Nnesha

okay i've 5 mints hurry up!

32. anonymous

oh i already did its find f(8) then i wrote f(8)= 2/4+2 = 2/6

33. anonymous

brb

34. Nnesha

post the original question plz

35. Nnesha

gtg bye good luck

36. Nnesha

sorry

37. anonymous

38. anonymous

:(

39. anonymous

@nincompoop

40. Nnesha

aww didn't get help tag me when you're online okay ?