Find the Slope of the Line Determined by This Pair $- \frac { 3 } { 10 }$

Multiple Choice

Find the slope of the line determined by this pair of points. (8, 3) , (18, 6)

A) $- \frac { 3 } { 10 }$
B) $\frac { 10 } { 3 }$
C) $\frac { 3 } { 10 }$
D) $- \frac { 10 } { 3 }$
E) $3$