In Exercises 1-4, determine whether the lines L1 and L2 passing through the pairs of points are

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In Exercises 1-4, determine whether the lines L1 and L2 passing through the pairs of points are parallel, perpendicular, or neither.

1. L1: (0, −1), (5, 9) L2: (0, 3), (4, 1)

2. L1: (−2, −1), (1, 5)L2: (1, 3), (5, −5)

3. L1: (−6, −3), (2, −3) L2: (3, - 1/2),(6, - 1/2)

4. L1: (4,8),(-4,2)L2: (3, -5),(1, 1/3)

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