Question

For questions 4–5, does the data in the table represent a direct variation or an inverse variation?
4.
x 2 4 6 8
y 14 28 42 56
(1 point)

A. direct variation; y = 1/7x
B. inverse variation; xy = 7
C. direct variation; y = 7x
D. inverse variation; xy = 1/7

Answer 1

@Machida help?!

Answer 2

try dividing each Y by its X

Answer 3

@Peter14 I just need the answer, my mom is driving me crazy.. i dont even know this and shes making me do it!

Answer 4

Check each ratio y/x

Answer 5

@Machida what would the answer be..

Answer 6

come up with what you think it is first

Answer 7

wait, check the ratio first..
:)

Answer 8

@Peter14 c??

Answer 9

did you find the same ratio,amanda?

Answer 10

@Machida no, I didnt..

Answer 11

OMG!! Just divide y/x :)

Answer 12

@Machida so like 14/2?

Answer 13

Yes, :)
Then 28/4,
do it all

Answer 14

@Machida its all 7, right?

Answer 15

Yes :) If the ratio(y/x) is same for all data, its mean direct variation, so the k=7.
Now, find for y=k/x :)

Answer 16

@Machida C?

Answer 17

yes :)

Answer 18

remember the formula, amanda :)

Answer 19

@Machida thank you!
x 2 4 8 12
y 4 2 1 2over3


a. inverse variation; xy = 8
b direct variation; y = 8x
c inverse variation; y over x = 8
d direct variation; y = 8 over x

can you just check to see if its right as i do it?(:

Answer 20

Yes, but this is inverse variation

Answer 21

@Machida I think I know this, is it A?

Answer 22

Yes :)

Answer 23

@Machida thanks!! :)

Answer 24

YW :)