Does the equation represent a direct variation? If so, find the constant of variation.

5x = -3y
A. no
B. yes; k = -5/3
C. yes; k = 5/3
D. yes; k = 3/5

Question

Does the equation represent a direct variation? If so, find the constant of variation.

5x = -3y
	A. no 	
	B. yes; k = -5/3 	
	C. yes; k = 5/3 	
	D. yes; k = 3/5

anonymous · Answer

Is the answer No?

anonymous · Answer

I don't think it is no, when two variables are related in a way where their values always have a constant ratio, they are directly related

anonymous · Answer

in other words, there is a value k for y = kx

anonymous · Answer

@Shi- the Y doesnt need to be first? and the X last? 
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anonymous · Answer

you mean can you switch the variables? so you get x=ky? While that would prove it is still directly related, the main definition for direct variation asks for y=kx.

Did you get a weird answer?

anonymous · Answer

Ah I dont understand math and I dont know what i am doing AHHH

anonymous · Answer

lol, k is just a placeholder for a number, you divide both sides of the equation by -3, and get y = (-5/3)x .

anonymous · Answer

Thank You!!! :)