To find the slope of the line that passes through the points $(7, -6)$ and $(6, -6)$, we can again use the slope formula:

$m = \frac{y_2 - y_1}{x_2 - x_1}$

Where:

• $(x_1, y_1) = (7, -6)$
• $(x_2, y_2) = (6, -6)$

Substituting these values into the formula:

$m = \frac{-6 - (-6)}{6 - 7} = \frac{-6 + 6}{-1} = \frac{0}{-1}$

Since the numerator is 0:

$m = 0$

So, the slope of the line is $\boxed{0}$.

This result tells us that the line is horizontal.

Would you like more details or have any questions?

Here are 5 related questions:

1. What is the equation of a horizontal line?
2. How does the slope of a vertical line differ from a horizontal line?
3. What does a zero slope indicate about the relationship between the two points?
4. How can you determine the slope of a line graphically?
5. What happens to the slope if the points are on a vertical line?

Tip: A slope of 0 always indicates a horizontal line, where all points on the line have the same $y$-coordinate.