Find a Cartesian equation for a conic section which consists of the points 
such that the distance between and the point 
is half the distance from the point to the line 
.
Incomplete.
Find a Cartesian equation for a conic section which consists of the points such that the distance between and the point is half the distance from the point to the line .
Incomplete.
The normal is (1/sqrt(2), 1/sqrt(2)). P=(-1/2, -1/2). The solution is sqrt(x^2+y^2)=(X-P)N.