Find the Slope of the Secant Line Indicated with a Dashed

Multiple Choice

Find the slope of the secant line indicated with a dashed line.
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A) $m = \frac { 4 } { 9 }$
B) $m = - \frac { 4 } { 9 }$
C) $m = \frac { 9 } { 4 }$
D) $m = - \frac { 9 } { 4 }$