Find the Slope of the Line Determined by This Pair $- \frac { 7 } { 10 }$

Multiple Choice

Find the slope of the line determined by this pair of points. (-1, 1) , (6, -9)

A) $- \frac { 7 } { 10 }$
B) $- \frac { 10 } { 7 }$
C) $\frac { 10 } { 7 }$
D) $\frac { 7 } { 10 }$
E) $- 10$