Parallel , perpendicular or neither

Question

4x+ 3y =9

4y=5y-12

Answer 1

Find and compare the slopes of the 2 lines.  (Do you know how to do that?)  If the slopes are equal, the lines are parallel.  If the slopes are negative reciprocals of each other, the lines are perpendicular.  Otherwise, the lines are neither parallel or perpendicular.