Question 127454
Finding the slope will answer these questions using the line formula Y=mX +b. Where (m)=slope.
3x-9y=19 or -9y=-3x+19 or y=-3x/-9+19/-9 or y=x/3-19/9
This line has a slope of (1/3)
27x+12y=19 or 12y=-27x+19 or y=-27x/12+19/12 
This line has a slope of (-27/12).
Seeing as these slopes are neither = nor a negative reciprocal of each other. Then these lines are neither perpendicular nor parallel.