In Exercises 6972, determine whether the lines and passing
Chapter , Problem 2.1.71(choose chapter or problem)
In Exercises 6972, determine whether the lines and passing through the pairs of points are parallel, perpendicular, or neither. L : 4, 8, 4, 21: 3, 6, 6, 0L2 L : 2: 0, 1, 5, 73
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