Tell Whether they are parallel, perpendicular, or neither

1) y= 4x + 7
y= -1/4x- 3

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

3) y= x+ 5
y= -5x - 1

HELP ME :D I know there are smart people out there >:T lol please.

1) perpendicular

2)parallel

3)neither

if the slope is the same then its parallel
if its the opposite recipicle then its perpendicular