First, remember these two affirmations:
Two parallel lines have the same slope
Two perpendicular lines have the inverse slope, the slope of each one is multiplied by -1
So
We can see in the second option that equation one has the same slope that equation two except that the equation is multiplied by -1. So there are 2 perpendicular lines
In the third option, we can see the same slope in the two functions so is parallel
Finally, the first option doesn't have any relationship.
