Answer:1. (0, -1) (4, 1)- Slope = (1 - (-1)) / (4 - 0) = 2/4 = 1/22. (-2, 3) (0, -1)- Slope = (-1 - 3) / (0 - (-2)) = -4/2 = -23. (4, 6) (4, 1)- Slope = (1 - 6) / (4 - 4) = -5/0 = undefined (This is a vertical line)4. (-5, 2) (4, 2)- Slope = (2 - 2) / (4 - (-5)) = 0/9 = 0 (This is a horizontal line)5. (4, 5) (2, 1)- Slope = (1 - 5) / (2 - 4) = -4/-2 = 26. (-2, 3) (-1, 4)- Slope = (4 - 3) / (-1 - (-2)) = 1/1 = 17. (5, 0) (0, -5)- Slope = (-5 - 0) / (0 - 5) = -5/-5 = 18. (4, 3) (7, 12)- Slope = (12 - 3) / (7 - 4) = 9/3 = 39. (-10, -3) (2, -7)- Slope = (-7 - (-3)) / (2 - (-10)) = -4/12 = -1/310. (10, 6) (4, -2)- Slope = (-2 - 6) / (4 - 10) = -8/-6 = 4/3