Find the Slope of the Line Containing the Given Points $P _ { 1 } ( - 8,1 ) , \quad P _ { 2 } ( - 8 , - 5 )$

Multiple Choice

Find the slope of the line containing the given points. $P _ { 1 } ( - 8,1 ) , \quad P _ { 2 } ( - 8 , - 5 )$

A) $\frac { 3 } { 8 }$
B) $\frac { 1 } { 4 }$
C) $- \frac { 3 } { 8 }$
D) 0
E) undefined