Answer
$3/11$
Work Step by Step
First, find the slope of line p. The slope is the change in y divided by the change in x.
$m=(7 - (-4))/(2-5)$
$m = 11/-3$
$m = -11/3$
Now, find the opposite reciprocal of this number.
$-1/m = 3/11$
This is the slope of the perpendicular line.