I've already been complemented twice on my previous answer, but then I discovered that I mis-read the question. My entire original answer was wrong, and I have to delete it.
I don't believe that any number can satisfy both of those conditions.
I'll say the question has no answer.
You know they are parallel because the lines will never intersect or meet. (Two straight lines usually mean it is parallel)
<em>The vertices of the given ellipse are Points L and </em><em>N</em><em>.</em><em>.</em><em>.</em>

We're given that
and
, and want to find
.
By the chain rule, we have

and


Then

(because the point
corresponds to
)

Answer:
(2x)X-12
Step-by-step explanation:
x-6.x-2