Question

If y varies inversely as x, and y=2/5 when x=2, find y when x=1

Answer 1

equation of inverse variation is \[\huge\rm y = \frac{ k }{ x }\]
replace x and y by their value solve for k
then plug in k value to find y

Answer 2

So... K would be .80 ... right?

Answer 3

k =80 hmm how did you get it?

Answer 4

Well, I converted 2/5 to a decimal, and then multiplied it by 2, which is what x was.

Answer 5

do u mean 0.8 ?

Answer 6

Yes.

Answer 7

It is 4/5.

Answer 8

alright
now y = k/x
replace k by .8
and x =1 find y

Answer 9

yes that's right

Answer 10

Do you mind helping me with one more? @Nnesha

Answer 11

i'll try :-)