Which equations show a direct variation between x and y when solved for y?

Choose all answers that are correct.

A. 3/4y = 6x

B. y = 2/5x - 2/5

C. y = 27x

D. 2y = x

Question

Which equations show a direct variation between x and y when solved for y?
 
Choose all answers that are correct.
 
 A. 3/4y = 6x
 
 
 B. y = 2/5x - 2/5
 
 
 C. y = 27x
 
 
 D. 2y = x

stamp · Answer

I would first ask, what is direct variation?

potatoofhistory · Answer

the Direct Variation formula is y=kx

potatoofhistory · Answer

I'm horrible at math :I

jhannybean · Answer

That's good. now out of all your possible answer choices, when you solve for y, which one(s) fit the form: $y=kx$?

stamp · Answer

Correct. Also said as,

If y is directly proportional to x, the equation is of the form y = kx (where k is a constant).

stamp · Answer

Only answer choices B and C are solved for y. 

What was produced when you solved answer choices A and D for y?

potatoofhistory · Answer

Thank you.I have 2 more