I am trying to test an equation for symmetry. The equation is x^2 = y^3 + 4.

I am starting by trying to find the intercepts. I think I found the intercepts for x - (2,0), (-2,0).

I am having trouble finding the intercepts for y.

I substitute 0 for X and get 0 + y^3 + 4. I convert that to y^3 = -4. I am not sure where to go from there. Can I get a cube root of four? Solving for y, would my answer be the cube root of four i? Does that mean there is no y intercept?

I've confused myself... Thanks for any help.