ethantmattingly18 ethantmattingly18 18-05-2021 Mathematics contestada Which equation(s) represents proportional relationship(s) with a constant of proportionality equal to 2? Select ALL that apply. A.y=2x B.−y=−2x C.2y=x+2 D.2y=4x E.y=2+x F.y+2=2x+2