Patrick B. answered 06/21/19
Math and computer tutor/teacher
the given line is 4x - 3y = -12
4x - 3y + 12 = 0
4x + 12 = 3y
(4/3)x + 4 = y
the given line has slope 4/3
the perpendicular line has slope -3/4
If you can give us a point through which the perpendicular line must pass,
we can get the exact equation.