1 $V_1 = \{(x, y) \in \mathbb{R}^2 : 11x + 7y = 0\}$ \\
2 $V_2 = \{(x, y) \in \mathbb{R}^2 : x^2 + y^2 = 7\}$ \\
3 $V_3 = \{(x, y) \in \mathbb{R}^2 : x = 7\}$ \\
4 $V_4 = \{(x, y) \in \mathbb{R}^2 : y = 0\}$ and \\
5 $V_5 = \{(x, y) \in \mathbb{R}^2 : y = 9x^3\}$ \\
Then the ONLY subspaces of $\mathbb{R}^2$ are: