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)

There are 18 female students and 16 male students in a class. which of the following expresses the ratio of female students to male students in simplest form? а) 10 b) 9 to 8 c) 8: 9 d)18/16