The problem is asking for the equation of a vertical line passing through the point (-4, -1).

For vertical lines, the equation is always of the form:

$x = a$

where $a$ is the x-coordinate of every point on the line. Since the line passes through the point (-4, -1), the equation is:

$x = -4$

This is the standard form of the equation for a vertical line passing through the given point. Let me know if you'd like any further explanation or have questions!

Related Questions:

1. What is the equation of a horizontal line passing through (-4, -1)?
2. How do you find the equation of a line through two given points?
3. What is the slope of a vertical line?
4. How does the equation of a vertical line differ from that of a horizontal line?
5. How can you graph a vertical line given its equation?

Tip: For any vertical line, the slope is undefined because it would involve dividing by zero in the slope formula ($m = \frac{\Delta y}{\Delta x}$).