Question 1083131
y=x^2+5x+9
x=y^2+5y+9
y^2+5y=x-9
y^2+5y+6.25=x-9+6.25, completing the square
(y+2.5)^2=x-2.75
y=-2.5+/- sqrt(x-2.75)
{{{graph(300,300,-10,10,-10,10,x^2+5x+9,-2.5+sqrt(x-2.75),-2.5-sqrt(x-2.75))}}}