Chapter 8.5B, Problem 11A

ASSESSMENT 8-4B

For each of the following, find the slope, if it exists, of the line determined by the given pair of points:

a. $(4,1)$ and $(5,2)$

b. $(3,81)$ and $(3,198)$

c. $(1.0001,12)$ and $(1,10)$

d. $(2,\sqrt{5})$ and $(2,\sqrt{5})$