The value of y varies directly with the value of x, and y = 12 when x = 4.
Which equations represent the relationship between y and x?

Choose exactly two answers that are correct.
A. y/x=3
B.xy=3
C.x=3y
D.y=3x

Question

The value of y varies directly with the value of x, and y = 12 when x = 4.
Which equations represent the relationship between y and x?

 

Choose exactly two answers that are correct.
A. y/x=3
B.xy=3
C.x=3y
D.y=3x

pinklion23 · Answer

@Destinymasha

nnesha · Answer

equation for direct variation is $$\huge\rm y = kx $$ first replace x and y by their values and solve for k
k is constant of variation

anonymous · Answer

since they say the value of y varies directly with the value of x then try an substitude a value of x which is 4 in the given equations and see which one gives you y as 12

pinklion23 · Answer

so the answer is a and c sorry im not good at math i am really good at science and history

nnesha · Answer

x = 3y 
like if you wanna do like "percy"  said then replace y by 12 and see if you get both side equal then yes if both side are not equal then nope

pinklion23 · Answer

oh okay i get it now thanks i wish i could give both of you meadals

nnesha · Answer

nah that's fine let us know what you get ??

anonymous · Answer

well you are welcome

pinklion23 · Answer

wait so x=3y is one of the answers?

nnesha · Answer

replace x and y by their values and let me know what you get on both side

pinklion23 · Answer

because 4 does not equal to (3)12

nnesha · Answer

yes that's mean x =3y is wrong

pinklion23 · Answer

okay i got D and A?!

nnesha · Answer

YES RIGHT

pinklion23 · Answer

yeah im so happy!