Which relation graphed below is a function?

Which of the following is true for the relation f(x)=2x^2+1

In the diagram, points d and e are marked by drawing arcs of equal size centered at b such that the arcs intersect ba and bc. then, intersecting arcs of equal size are drawn centered at points d and e. point p is located at the intersection of these arcs. based on this construction, m , and m

What are the solutions of the equation x4 + 6x2 + 5 = 0? use u substitution to solve.