Question

y varies inversely as twice x. When x = 2, y = 5. Find y when x = 10

Answer 1

inversely think division
directly think multiplication

Your problem says inversely

So you want to do division

y=k/what?

Answer 2

k is a constant by the way

Answer 3

what goes in the denominator?

Answer 4

I forgot the formula though

Answer 5

what does twice x mean?

Answer 6

two times X

Answer 7

right so that part is the answer to my question

Answer 8

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

Answer 9

What is K though?

Answer 10

Now plug in 2 for x and 5 for y
and solve for k
This number k is a constant so what you get is what k will always be no matter what x and y are

Answer 11

OH!! Ok thanks:D

Answer 12

Feel free to let me know what you get for k
And I will give you a thumbs up or a thumbs down k?

Answer 13

K=20

Answer 14

Brilliant! *puts thumbs up*

Answer 15

How do I solve the other part where it say find Y when X=10 though

Answer 16

So we have
\[y=\frac{20}{2x}\]
Plug in x for 10
Simplify and evaluate to get y

Answer 17

And you are done after that
Congrats

Answer 18

Y= 1

Answer 19

yep

Answer 20

YAY:D Thank you sooo much

Answer 21

np