Let $L_1$ be the line containing points (2, -7) and (6, 10), and let $L_2$ be the line containing points (1, -6) and (-23, -108). Find the slope of each line.

The slope of $L_1$	=
The slope of $L_2$	=

Which one of the statements below is correct?

A. The two lines are perpendicular.
B. The two lines are parallel.
C. The two lines are neither parallel nor perpendicular.