Question 305897
{{{4x=y^2-4y}}}
{{{4x+4=y^2-4y+4}}}
{{{4(x+1)=(y-2)^2}}}
{{{y-2=0 +- 2sqrt((x+1))}}}
{{{y=2 +- 2*sqrt((x+1))}}}
It's a parabola. 
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{{{ graph( 300, 300, -5, 5, -10, 10, 2+2*sqrt((x+1)), 2-2*sqrt((x+1))) }}}