So 2x +y =3 isn't a direct variation? Neither is 2.4+6=1.2y. But 8x+2y=0 is and y= 4x is the constant? And x-3y=0 is a direct variation and y=-1/3x is the constant.
It is not a direct variation
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Direct variations look like y=5x or like y=-2x
So it doesnt matter if you can graph it? You can graph any equation right? So a direct variation just has an x and y with something multiplied to x? So x-3y=0. Where y= -3x. And 8x+2y=0 where y=4x
Those are but these are not----- 2x+y=3 isn't. Neither is 2.4x + 6 = 1.2y isn't either?
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