For xy=6xy = 6xy=6, dy/dx=dy/dx =dy/dx=A−x/y-x/y−x/yB−y/x-y/x−y/xcheck_circleCy/xy/xy/xDx+yx + yx+yExplanationDifferentiate: y+xy′=0⇒y′=−y/xy + x y' = 0 \Rightarrow y' = -y/xy+xy′=0⇒y′=−y/x.