Answer:
parallel lines
Explanation:
The two lines, Y = (1/2)x - 3 and y = (-1/2)x - 3, are parallel lines.
Parallel lines have the same slope but different y-intercepts. In this case, both lines have a slope of 1/2, but their y-intercepts are different (-3 in both cases). This means that the lines will never intersect and will remain equidistant from each other.
Visually, these lines will have the same steepness but will be shifted vertically. They will run parallel to each other with a constant distance between them.
In summary, the given lines Y = (1/2)x - 3 and y = (-1/2)x - 3 are parallel lines with the same slope and different y-intercepts.