What is the slope of a line that passes through (–8,–16) and (18,5)?

i don't quite know how to write the multiple choice that is there (it's images) but i'll try my best.

a.
-26
__
21

b.
21
__
26

c.
26
__
21

d.
-21
__
26

Here are the 30 best lifetime baseball batting averages of all time, arranged in order from lowest to highest: 0.319, 0.329, 0.330, 0.331, 0.331, 0.333, 0.333, 0.333, 0.334, 0.334, 0.334, 0.336, 0.337, 0.338, 0.338, 0.338, 0.340, 0.340, 0.341, 0.341, 0.342, 0.342, 0.342, 0.344, 0.344, 0.345, 0.346, 0.349, 0.358, 0.366 if you were to build a histogram of these data, which of the following would be the best choice of classes?