Chapter 7 - Applications of Trigonometry and Vectors - Section 7.4 Vectors, Operations, and the Dot Product - 7.4 Exercises - Page 332: 4

$\textbf{m}$= $-1\textbf{q}$ $\textbf{p}$= $-1\textbf{q}$ $\textbf{n}$=$-1\textbf{s}$ $\textbf{r}$=$-1\textbf{s}$.

According to the requirements of the term 'scalar negative', we need to identify pairs of vectors that may have equal or different magnitudes in opposite directions. According to this definition, the required pair of vectors are $\textbf{m}$= $-1\textbf{q}$, $\textbf{p}$= $-1\textbf{q}$,$\textbf{n}$=$-1\textbf{s}$ and $\textbf{r}$=$-1\textbf{s}$.