#### Answer

$|p-9| \le 0.0001$

#### Work Step by Step

RECALL:
$|a-b|$ represents the distance between the real numbers $a$ and $b$.
Thus, the distance between $p$ and $9$ is represented by $|p-9|$.
Since the distance is within (less than or equal to) $0.0001$ units, then the required inequality is:
$|p-9| \le 0.0001$