To calculate the slope of the line, we use the slope formula:

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

From the graph, the two points on the line are $(0, -7)$ and $(5, -1)$. Substituting these coordinates into the formula:

$m = \frac{-1 - (-7)}{5 - 0}$

Simplify the numerator and denominator:

$m = \frac{-1 + 7}{5} = \frac{6}{5}$

Thus, the slope of the line is:

$\boxed{\frac{6}{5}}$

Would you like more details or have further questions?

Here are 5 related questions to deepen understanding:

1. How is the slope related to the steepness of a line?
2. What would the slope be if the line were horizontal or vertical?
3. How can the slope formula be derived from similar triangles?
4. What does a positive or negative slope indicate about a line's direction?
5. How can you determine the slope from an equation like $y = mx + b$?

Tip: Always simplify the fraction for slope to its lowest terms to ensure accuracy and clarity!