could anyone help me on this subspace test please. would be much appreciated thank you
Let (V,+, ·) be $R^3$ with the usual vector addition and scalar multiplication. For each of the following, either use the subspace test to show that the given $W$ is a subspace of (V,+, ·) or explain why $W$ is not a subspace.
$W := \{w \in V \mid w . (1,-3, 2) = 1\}$