Find the slope of the line through each pair of points. 1) (19, −16), (−7, −15) 2) (1, −19), (−2, −7)
3) (−4, 7), (−6, −4)
4) (20, 8), (9, 16)
5) (17, −13), (17, 8)6) (19, 3), (20, 3)
7) (3, 0), (−11, −15)
8) (19, −2), (−11, 10)