$\text { Find the slope } m \text { of the line tangent to the graph of the function } g ( x ) = 9 - x ^ { 2 } \text { at the }$

Multiple Choice

$\text { Find the slope } m \text { of the line tangent to the graph of the function } g ( x ) = 9 - x ^ { 2 } \text { at the }$ point $( 4 , - 7 )$

A) $m = 4$
B) $m = 9$
C) $m = - 8$
D) $m = - 7$
E) $m = - 18$