Question

Helpp please!!!!! Ill Give Medal
The value of y varies directly with the value of x, and y = –21 when x = 3. Which equations represent the relationship between y and x? Choose exactly two answers that are correct.
A. -7x = y

B. y/x = -7

C. x/y =7

D. xy = -7

Answer 1

so x * something = y
3*x = -21

Answer 2

soo, what times 3 = -21? @Kayla369 ?

Answer 3

-7 im pretty sure....

Answer 4

Yes! so A is the first answer and now we just need to reverse the operation.

Answer 5

yea it's -7 so the only option that goes with it is A

Answer 6

A and C??????

Answer 7

no not C
the answer has to be -7 when y is divided by x

Answer 8

well C is posotive so what answer is yhe only other one that has a negative 7?

Answer 9

lol i meant B but i guess now i know its not c

Answer 10

Yea good job hope I helped bye!

Answer 11

yea its B

Answer 12

so A and B

Answer 13

ok n just to be positive 9.1% as a decimal is 0.91 right lol

Answer 14

Yes lol

Answer 15

ok good xD

Answer 16

no 9.1% is 0.091

Answer 17

because you move the decimal place 2 places to the left

Answer 18

if it was 91% it would be 0.91

Answer 19

lol ima check what google says lol cause i was pretty sure it was 0.91

Answer 20

oh, i looked it up on google but it could be wrong...sorry

Answer 21

oh its ok :)

Answer 22

i can change it

Answer 23

ok lol im just gonna check everything with you guys lol so One hundred twenty is what percent of 200? its 60% right??

Answer 24

60%

Answer 25

ok so i am right

Answer 26

yes! :)

Answer 27

If 75% of a number is 108, what is the number? the number is 144 right??

Answer 28

yes

Answer 29

Thx for the medal!

Answer 30

ok im not sure what this one is n no problem
The price of a mobile phone decreased from $375 to $250 during a clearance sale. What is the percent of decrease in the price?

Round to the nearest percent, if necessary.



A.


32%


B.


33%


C.


50%


D.


83%

Answer 31

???

Answer 32

im thinking 33%

Answer 33

A $6000 investment earns $690 simple interest in two years. What is the annual interest rate?



A.


1.15%


B.


5.75% <------- maybe


C.


11.5% <-------- i think


D.


57.5%

Answer 34

which to u think b or c

Answer 35

C

Answer 36

same

Answer 37

kk :) thanks

Answer 38

your welcome, ok i got to go bye!

Answer 39

The price of a bag of oranges is directly proportional to the number of oranges packaged in the bag. The table shows this relationship.



What is the constant of proportionality? ( i think the answer is 4 am i right )


Oranges (x) 8 12 16
Price ($) (y) 2 3 4

Answer 40

oh ok bye