question:Curve C is the intersection of plane $\displaystyle z=1+y$ and $\displaystyle z=\sqrt{x^2+y^2}$

C is a parabola, a conic section.

Find parametric equations for C

my worklugging z=1+y into first equation I get [tex]1+y=\sqrt{x^2+y^2}[tex]

problem: I don't know what to do next

hint:use t as parameter, with x=t (-infinity<t<infinity)