PDF problem

Posted by Dreyfus on Jan 31, 2014; 4:29pm
URL: http://discussion-forum.276.s1.nabble.com/PDF-problem-tp7584616.html

Determine k so that
f(x,y) = kx(x-y) for 0<x<1 , -x<y<x
             0              Elsewhere
can serve as joint probability density.

I m stuck with the domain of y ......please help