According to graph, the coordinates of the vertex of the parabola are (-4,-4).
"A parabola is a plane curve which is mirror-symmetrical and is approximately U-shaped."
"The vertex of a parabola is the point at the intersection of the parabola and its line of symmetry. For a parabola whose equation is given in standard form, the vertex will be the minimum (lowest point) of the graph and the maximum (highest point) of the graph.
After analysing the graph, the vertex of the parabola are (-4,-4)
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