Question 1134411
It would be of the form y^2=x
{{{graph(300,300,-10,10,-10,10,sqrt(x),-sqrt(x))}}}
Or, if a function is required, when x=4, y^2 would be 16, but (1/8)y^2=2, so y=(1/8)x^2
{{{graph(300,300,-10,10,-10,10,(1/8)x^2)}}}