Question 879443
y= -4x^2-2 (Green)
x = -4y^2 - 2
ħsqrt((x+2)/-4) = y Inverse
{{{drawing(300,300,   -10,10,-10,10,  
 grid(1),
graph( 300, 300, -10,10,-10,10,0, -4x^2-2, sqrt((x+2)/(-4)),-sqrt((x+2)/(-4))))}}}