Final answer:
When multiple lines have slopes equal to 0, it means they are horizontal lines that are parallel to the x-axis. These lines have zero vertical change over the horizontal run and are parallel to each other.
Step-by-step explanation:
When a bunch of slopes of parallel lines are all equal to 0, it means that the lines are all horizontal lines. This does not mean the lines are perpendicular or that they have undefined slopes. Instead, it signifies that the lines do not rise or fall as they move from left to right; they have zero rise over the run. Therefore, all lines with a slope of 0 are parallel to the x-axis, and they could be at any positive or negative value on the y-axis, depending on their specific equation.
The correct answer to the question is that the lines are parallel. In a graph, lines that are parallel to each other will never intersect, no matter how far they are extended. Since the slope represents the steepness of the line, a slope of zero results in a flat line, indicating no vertical change as you move along the x-axis.