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

Choose all answers that are correct.

Question

Which equations show a direct variation between x and y when solved for y?
 
Choose all answers that are correct.

anonymous · Answer

anonymous · Answer

anonymous · Answer

anonymous · Answer

anonymous · Answer

@amistre64

amistre64 · Answer

if they are simple enough to type out, please do so.  otherwise things get lost in trying to flip back and forth among windows

amistre64 · Answer

do you recall what a general direct variation looks like as y=???

anonymous · Answer

A.y-9=2x+9

anonymous · Answer

and no i dont

amistre64 · Answer

from what i recall, its just a linear eqaution:

y = kx

anonymous · Answer

B.y=4/7x

amistre64 · Answer

if x is in the denominator, then its not direct

anonymous · Answer

so all of the ones besides the ones with x as a denominator?

amistre64 · Answer

correct

yamyam70 · Answer

|dw:1418495744550:dw|

anonymous · Answer

so what does that mean @yamyam70  ^

yamyam70 · Answer

you know that a direct variation means multiply right?

given general formula for direct variations is y = kx

yamyam70 · Answer

so if x is a denominator, that means it varies "INVERSELY"  which is NOT a direct variation.

anonymous · Answer

brb

yamyam70 · Answer

Try solving for y in every equation then if x is not a denominator , it varies directly.