Find the slope of the line through each pair of points. 1.) (-20, 19), (3, 13)
2.) (20, 17), (5, 16)
3.) (-9, -13), (-7, -7)
4.) (12, 20), (19,8)
5.) (-3,-5),(-10,5)
6.) (0, -15), (-8, 15)

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