Answer
Slope of the line is undefined.
Work Step by Step
Take first two points from the table.
$(x_1,y_1)=(5,-12)$ and $(x_2,y_2)=(5,-9)$.
Use slope formula.
$m=\frac{y_2-y_1}{x_2-x_1}$
Substitute all the values.
$m=\frac{-9-(-12)}{5-5}$
Simplify.
$m=\frac{-9+12}{0}$
$m=\frac{3}{0}$
Division by zero is undefined.
Hence, the slope of the line is undefined.
