Find the Slope of the Line That Goes Through the Given

Find the slope of the line that goes through the given points.
- $\left( \frac { 1 } { 5 } , 3 \right)$ and $\left( \frac { 1 } { 5 } , 0 \right)$

A) $\frac { 15 } { 7 }$
B) $- \frac { 7 } { 15 }$
C) $- \frac { 15 } { 7 }$
D) Undefined