Find the Slope of the Line Going Through the Pair $- \frac { 9 } { 8 }$

Multiple Choice

Find the slope of the line going through the pair of points.
-(2, -9) , (2, -1)

A) $- \frac { 9 } { 8 }$
B) 8
C) Undefined
D) $- \frac { 8 } { 9 }$