Which of the following functions represents a direct variation?
A. y = x^2
B. y = -8x
C. y = -2/x
D. y = x^3

Question

Which of the following functions represents a direct variation?
	A.	y = x^2
	B.	y = -8x
	C.	y = -2/x
	D.	y = x^3

luigi0210 · Answer

Didn't understand the last time?
Here, just use the equation: y=kx

anonymous · Answer

i dont understand how. stop making me feel stupid please.

luigi0210 · Answer

I'm not trying to make feel you stupid at all! I'm Sorry if that's how it seemed but I'm not.. I was just trying to help :(

anonymous · Answer

i dont understand how to put that into an equation with given any other numbers

luigi0210 · Answer

k is just a constant.. meaning it can be any number, positive or negative

anonymous · Answer

i guess i just dont understand it.

luigi0210 · Answer

here are examples of direct variations:
y=6x
y=-3x
y=.5x
y=-0.2x

anonymous · Answer

ohmygod is it B? ... im totally missing your point here. i read your answer like hey you need to find one whatever random number in the world and figure out what the answer is. and that wasnt it.

anonymous · Answer

C! .. sorry. i was reading another question.

anonymous · Answer

noo ... B. ugh SO MUCH HOMEWORK im getting lost in.

luigi0210 · Answer

actually B is right.
And C is an example of an inverse variation

luigi0210 · Answer

See you got it :)