Chapter 7 - Applications of Trigonometry and Vectors - Section 7.4 Vectors, Operations, and the Dot Product - 7.4 Exercises - Page 332: 6

We can sketch the vector $-g$ by taking the original vector $g$ and rotating it $180^{\circ}$.

We can sketch the vector $-g$ by taking the original vector $g$ and rotating it $180^{\circ}$. That is, the vector $-g$ points in the opposite direction as the original vector $g$.