To compute the dot product of two vectors, we multiply corresponding components and sum the results.
In this case, we have $\begin{pmatrix} -4 \\ -1 \end{pmatrix} \cdot \begin{pmatrix} 6 \\ 8 \end{pmatrix} = (-4)(6) + (-1)(8) = -24 + (-8) = \boxed{-32}$.
The answer is: -32
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
Compute $\begin{pmatrix} -4 \\ -1 \end{pmatrix} \cdot \begin{pmatrix} 6 \\ 8 \end{pmatrix}$.

### Answer:
