Question

Question down below, will award a medal.

Answer 1

@Nnesha

Answer 2

I had gotten 4=10*25

Answer 3

How would I find y if x=25?

Answer 4

How do I solve this problem? @freckles

Answer 5

I'm not really understanding.

Answer 6

y varies with x
means
y=kx

Answer 7

Ok

Answer 8

assuming it varies directly anyways

Answer 9

oh actually that is the form it gives in the last sentence

Answer 10

y=kx
so anyways you need to find the constant of variation k
constant means no matter what x and y is the constant will keep being the same number

Answer 11

so we can find k given (x,y)=(10,4)

Answer 12

replace x with 10
replace y with 4
and solve for the constant k

Answer 13

10/4

Answer 14

?

Answer 15

so you replace y with 4
and x with 10
in the equation y=kx

so that g ives
4=k(10)

try again...

Answer 16

k is being multiplied by 10

Answer 17

to get k by itself you need to divide both sides by 10

Answer 18

4/10=10k/10 ?

Answer 19

so k=?

Answer 20

.4

Answer 21

10/10=1
and 1k=k
so you have 4/10=k right?
and you can reduce 4/10 as 2/5 or I guess you can choose also to write it as .4 as you just did

Answer 22

so you had y=kx
and you just found k to be .4
y=.4x

Answer 23

this is the equation you have and now you know k

Answer 24

Oh thank you soo much!!

Answer 25

now the last step is to solve for y when x is 25

Answer 26

ok one sec

Answer 27

y=.4x
y=.4(25)

Answer 28

10

Answer 29

yes 4*25 is 100
since 4 quarters is a dollar
and .4*25=10
great
so when x is 25 y is 10

Answer 30

Thanks

Answer 31

np