Answer: y = -5
Step-by-step explanation: If a line has a slope of 0, it means that the line is horizontal. The equation of a horizontal line passing through the point (x1, y1) can be written in the slope-intercept form (y = mx + b) as:
y = y1
In your case, the line passes through the point (1, -5), so x1 = 1 and y1 = -5. Thus, the equation of the horizontal line is:
y = -5
This is the equation in slope-intercept form for a horizontal line with a slope of 0 that passes through the point (1, -5).