Question

MEDALS

Answer 1

Suppose y varies inversely with x. write an equation for the inverse variation

28. y= 4 when x= 2.5

30. y= 5 when x= -5

Answer 2

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

Answer 3

How do you get the k..

Answer 4

multiply x and y

Answer 5

And is that for the first?

Answer 6

yes

Answer 7

And how is the second one done?

Answer 8

first write the answer for number 28 please

Answer 9

write an equation for the inverse variation

Answer 10

what did you get for k?

Answer 11

10?

Answer 12

correct, now this is called the constant of variation, please substitute it into the inverse variation equation

Answer 13

$$\Huge y=\frac{k}{x}$$

Answer 14

4=10/2.5

Answer 15

only the k

Answer 16

y=10/x

Answer 17

That is the answer to #28

Answer 18

Okay! How do i find the equation for 30? I dont get how to get k

Answer 19

the exact same way as you did for #28

Answer 20

so k=xy

Answer 21

yep

Answer 22

k=-25

Answer 23

now you're learning :)

Answer 24

y=-25/x?

Answer 25

you deserve a medal :D

Answer 26

Thank you! :)

Answer 27

Thanks for asking :)