To calculate the slope of the given line, we need to use the formula:

$\text{slope (m)} = \frac{\text{rise}}{\text{run}}$

From the graph:

1. The line passes through two points: approximately $(-8, 8)$ and $(8, -8)$.
2. The rise is the change in the $y$-coordinates: $-8 - 8 = -16$.
3. The run is the change in the $x$-coordinates: $8 - (-8) = 16$.

Now, substitute these values into the slope formula:

$m = \frac{-16}{16} = -1$

The slope of the line is -1, as given in the answer box.

Would you like me to explain further or check other aspects of the problem?

Related Questions:

1. What is the general formula for calculating the slope between two points?
2. Can a vertical line have a slope? Why or why not?
3. How does a negative slope affect the direction of a line?
4. What are the key differences between slope-intercept and point-slope forms of linear equations?
5. How can the slope be applied to real-world problems, such as rates of change?

Tip:

Always double-check the rise and run calculations by identifying exact coordinates to ensure accuracy!