Find the slope of the line containing points (4, 5) and (4, 1).
Find the slope of the line containing points (5, 3) and (2, 1)
Find the slope of the line containing points (4, 1) and (1, 0).
Find the slope of the line containing points (4, 5) and (1, 5)
Find the slope of the line containing points (5, 2) and (3, 4)
Find the slope of the line containing points (8, 5) and (6, 1).
Find the slope of the line containing points (6, 8) and (2, 10)