Answer:
The slope of the perpendicular line m =6
Explanation:
Step(i):-
Given that the equation of the straight line
2x + 12y =-192
⇒ 12 y = -192 -2x


y = m x +C
The slope of the given line

Step(ii):-
The slope of the perpendicular line

=

The slope of the perpendicular line m =6