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Good point. I think only Anastasia can clear that out ...
Yes, but what is the line intersecting with? We've already calculated where it crosses the axes. I agree that vertex wouldn't normally mean 'minimum point', but I couldn't think of what else it could mean.
Yes you're right , I apologize for my mistake, for x=0, y=1. Isn't a vertex considered like an intersection point btw?
The x intercepts are as Chemist already said, but the y intercept is 1, because the equation is 2x² + 4x +1.
you mean finding the roots of this quad eq ?
2x^2+ 4x + 1 = 0