How can I determine the projection of the solid onto $X-Z$ plane bounded below by paraboloid $z=x^2 +y^2$ and above by the plane $2x + z =3$
Since the projection is onto $X-Z$, we to have a projection curve equation that will not have $y$. But the plane $2x + z =3$ has no $y$ in it. So how can I get the projection onto $X-Z$ plane? Also, what is the geometric meaning when only one variable {x or y or z} is missing in the equation of a plane ?