Question

y varies inversely as twice x. When x = 9, y = 2. Find y when x = 3

Answer 1

twice x

Answer 2

Ya I got that..

Answer 3

I saw:)

Answer 4

See, the y is varying twice x, so

\[y = \frac{k}{2x}\]

You have x = 9 and y = 2,

So plug in the values and find k first...

Answer 5

What you got for k??

Answer 6

okay i found k i think

Answer 7

36?

Answer 8

I got 8

Answer 9

Yes you are right...

Answer 10

o sorry I read it wrong

Answer 11

k = 36 is right..

Now use the same formula that I have written above..

now k= 36, x = 3 now solve for y..

Can you do that??

Answer 12

y=6?

Answer 13

yep:)

Answer 14

Yes you are right dear..

Answer 15

Thank you "waterineyes" it really helped me understand better :)