Final answer:
To find the equation of the line with an undefined slope, we can use the equation x = c, where c is the x-coordinate of the given point on the line.
Step-by-step explanation:
To find the equation of a line when the slope is undefined, we can use the equation x = c, where c is the x-coordinate of the given point on the line.
In this case, the point (-3, -5) lies on the line with undefined slope. So the equation of the line is x = -3.