Final answer:
a) Parallel lines have the same slope and different y-intercepts. b) Perpendicular lines have slopes that are negative reciprocals of each other.
Step-by-step explanation:
a. Parallel Lines: The slopes are the same, and the y-intercepts are different.
The slopes of parallel lines are always equal. In the given example, Line A has a slope of -4.7 and Line B has a slope of 12.0, so they are not parallel.
b. Perpendicular Lines: The slopes are different, and the y-intercepts are different.
Perpendicular lines have slopes that are negative reciprocals of each other. The given lines do not have slopes that are negative reciprocals, so they are not perpendicular.