Question

Is each line parallel, perpendicular, or neither parallel nor perpendicular to a line whose slope is −3/4?

Answer 1

Lime m is neither because it does not have the opposite reciprocal nor same slope.
Line n is perpendicular because it has the opposite reciprocal. 
Line p is neither because it does not have the opposite reciprocal nor same slope.
Line q is parallel because it has the same slope.