Determine vectors that are in the solution space of a matrix I am doing a past exam question that gives a $4 \times 6$ matrix $A$ along with four $6 \times 1$ vectors and asks you to determine which vectors are in the solution space of $A$.

$$
A=\pmatrix{-1&amp;2&amp;3&amp;-3&amp;6&amp;7\\1&amp;-1&amp;-2&amp;2&amp;-5&amp;-6\\-1&amp;1&amp;2&amp;-1&amp;2&amp;4\\-2&amp;2&amp;4&amp;-2&amp;4&amp;8}.
$$

I have already calculated the solution space of $A$ but cannot find any of the $4$ vectors in the solution space. Could somebody tell me what to do for this question?
Let the vector be $\mathbf x$, using Matlab to test whether $\mathbf{Ax=0}$. If the product is $\mathbf0$, then we say that the vector is in the solution space.
Let the vector be $\mathbf x$, using Matlab to test whether $\mathbf{Ax=0}$. If the product is $\mathbf0$, then we say that the vector is in the solution space.