Question

Please Help??



Which of the following represents a direct variation?
Select one:
A. An y table shows the following coordinate pairs: ten comma seven, thirty-five comma two, and five comma fourteen.

B. Lance bought 3 CDs and spent forty-five dollars. Jacob bought 5 CDs and spent sixty-five dollars.

C. y = 5/8x

Answer 1

which one do you know for certain is not the answer

Answer 2

I thought that the first one was right but its not.

Answer 3

Do you know what a Direct variation is?

Answer 4

yes

Answer 5

Direct Variation= mathematical relationship between two variables that can be expressed by an equation in which one variable is equal to a constant times the other

Answer 6

Did you write out a table yet?

Answer 7

no

Answer 8

That might help you figure it out! Should I help you?

Answer 9

yes please

Answer 10

okay hold...

Answer 11

ok :)

Answer 12

Okay so what numbers for the first one would you have?

Answer 13

I multiplied x by y on the chart and all of the answers were 70.

Answer 14

So your answer would be?

Answer 15

I dont know

Answer 16

What is a Direct variation?

Answer 17

i tried the chart and it was wrong

Answer 18

Okay so try letter b then

Answer 19

ok

Answer 20

See what you get then gone on to C if you have too! :)

Answer 21

I tried that and none of them have a direct relationship

Answer 22

I dont understand what to do on 3

Answer 23

B is not an answer and A would be close but it is false so your answer would be C

Answer 24

can you explain why c is correct?

Answer 25

?

Answer 26

hold on let me think...

Answer 27

Direct variation is always in the form y = kx where k is the constant of variation...so

Answer 28

i knew that

Answer 29

my bad it would be B because it compares who bought more CD'S and who spent more money

Answer 30

well thanks I didnt think that would be correct but ok.

Answer 31

oh ok

Answer 32

Do you get it now?

Answer 33

yes thanks

Answer 34

okay good! Have a great rest of your day!

Answer 35

thank you! you also!