Question

will fan and medal!
Which is the direct linear variation equation for the relationship?

y varies directly with x and y = 12 when x = 4.


A.
y = 3x

B.
y = x + 8

C.
y = 2x + 4


D.
y = x – 8

Answer 1

c correct?

Answer 2

First, lets eliminate the one we know can't be right, okay?

Answer 3

okay

Answer 4

Lol, bear with me, I'm trying to follow "the code of conduct" here.
So which ones do you know are absolutley wrong?

Answer 5

d and a?

Answer 6

ummm why not plug in x=4 and y=12 and see if they equal

Answer 7

*they are... since you are given x =4 and y =12 . and there are multiple choices so use the given information to see which equation becomes equal

Answer 8

they are what?

Answer 9

no I was correcting myself.

Answer 10

oh ok so im correct about d and a?

Answer 11

oh geez if I just plug it in... I have three working and 1 not working

Answer 12

A through C is working D.. isn't if I just plug it in... hmm..

Answer 13

@Usukidoll I think you need to read the question being asked here
And i think c would be the way to go.

Answer 14

@ChiShiki Is this a test?

Answer 15

no just a question

Answer 16

why?

Answer 17

Lol, no reason.

Answer 18

so its c am i correct?

Answer 19

I believe so.

Answer 20

thank you!

Answer 21

can you medal @Usukidoll Najia2000 that way everyone gets a medal.

Answer 22

Sure!

Answer 23

thank you!

Answer 24

yay everyone got medals.. p.s. I need my eyes checked...stigmatism is getting bad =(

Answer 25

I hope your eyes have nothing wrong then!

Answer 26

compliment

Answer 27

I can't see well in the dark that much...and even if I could, it's pixelled or something.

Answer 28

double vision when reading doesn't work either.

Answer 29

topic *direct variation*
you must have to know equation for direct varation \[\huge\rm y =\color{red}{ k}x \]
where k is "constant of variation"
replace x and y by their values and solve for k

Answer 30

the*

Answer 31

y = k \(\huge\color{green}{\rm times}\) x
not addition or subtraction signs

Answer 32

uh oh... eeeppp

Answer 33

@ChiShiki might outta read this... the answer has to be a if what Nnesha says holds true. k would be 3 if x = 4 and y = 12.

Answer 34

the answer is not C

Answer 35

what if you did not have choices?
Use the response by @Nnesha to review what is meant by direct varation

Answer 36

Thank you Nnesha!

Answer 37

np :-)