$\text { Consider the function } f ( x ) = \sqrt { x } \text { and the point } P ( 9,3 ) \text { on the graph of } f \text {. }$

Multiple Choice

$\text { Consider the function } f ( x ) = \sqrt { x } \text { and the point } P ( 9,3 ) \text { on the graph of } f \text {. }$ Estimate the slope $m$ of the tangent line of $f$ at $P ( 9,3 )$ . Round your answer to four decimal places.

A) $\mathrm { m } = 0.1667$
B) $\mathrm { m } = 0.0832$
C) $\mathrm { m } = 0.3800$
D) $\mathrm { m } = 0.0556$
E) $\mathrm { m } = 0.0833$