I think this is right. Hope it helps
No because 4/1 does not equal to 9/4 or 16/9
I would say 25 is the answer to it
Yes you need to! And you need to be careful not to forgot that when doing your calculations!!
Answer:
<em>Parallel slopes</em>: two lines that has the same slopes but have different y-intercept
<em>Perpendicular slope</em>: two lines that are negative reciprocals(common) of each other
