determine if the lines are Parallel,Perpendicular or neither . 6x+10y=20 and 5x-3y=21 show steps please

6x+10y=20
10y=-6x+20
y=-6/10x+20/10
y=-3/5x+2

5x-3y=21
-3y=21-5x
y=21/-3+-5/-3x
y=3/5x-7


Two lines are Perpendicular