Determine whether the graph of each pair of equations are parrallel, perpendicular, or neither

1. y= 3x +4
y= 3x +7

2. y= -4x+1
4y= x + 3


3. y= 2x - 5
y = 5x -5


4. y= -1/3x +2
y = 3x - 5

5. y = 3/5x - 3
5y=3x-10