\begin{tikzpicture}

	\draw[thick,->] (0,0) -- (3.5,0);
	\draw[thick,->] (0,0) -- (0,3.5);

	\onslide<1->{\draw[densely dotted] (-1.2021,3.1111) -- (3.1111,-1.2021);}
	\onslide<2->{\draw[densely dashed, blue] (-2,1) -- (1,-2);}
	\onslide<7->{\draw[densely dashed, blue] (1.33,2.5) -- (1.33,-2.0);}
	\onslide<8->{\draw[densely dashed, blue] (4.44,0) -- (0,4.44);}

	\node at (3.3, -0.2) {$x_1$};
	\node at (-0.2, 3.3) {$x_2$};

	\node at (-0.1, -0.3) {$(0,0)$};
	\node at (-0.1, 2.3) {$(0,1)$};
	\node at (2.0, -0.3) {$(1,0)$};
	\node at (2.2, 2.3) {$(1,1)$};
	\onslide<1->{\node at (0.1, 2.8) {$-1 + 1.1x_1 + 1.1x_2 = 0$};}
	\onslide<2->{\node at (-0.1, -2.0) {$-1 + (-1)x_1 + (-1)x_2 = 0$};}
	\onslide<7->{\node at (1, -1.0) {$-1 + (1.5)x_1 + (0)x_2 = 0$};}
	\onslide<8->{\node at (1.1, 3.8) {$-1 + (0.45)x_1 + (0.45)x_2 = 0$};}

	\filldraw (0,0) circle (2pt);
	\filldraw (0,2) circle (2pt);
	\filldraw (2,0) circle (2pt);
	\filldraw (2,2) circle (2pt);
\end{tikzpicture}