Find the Slope of the Line Determined by This Pair $( c , 0 ) , ( 0 , d )$

Multiple Choice

Find the slope of the line determined by this pair of points. $( c , 0 ) , ( 0 , d )$

A) $\frac { c } { d }$
B) $- \frac { c } { d }$
C) $\frac { d } { c }$
D) $- \frac { d } { c }$
E) undefined