Superset of Linearly Dependent Set is Linearly Dependent

Theorem
Any set containing a linearly dependent set is also linearly dependent.

Proof
Follows directly from Subset of Linearly Independent Set:

Suppose $\left\{{a_1, a_2, \ldots, a_n}\right\}$ is a linearly independent set.

Then any subset $\left\{{b_1, b_2, \ldots, b_m}\right\}$ of $\left\{{a_1, a_2, \ldots, a_n}\right\}$ must itself be linearly independent.

Thus if $\left\{{b_1, b_2, \ldots, b_m}\right\}$ is linearly dependent, then so must $\left\{{a_1, a_2, \ldots, a_n}\right\}$ be.