Explanation:
by order
the 1st one y = 4x^2
vetex (0,0) and upward
the 2nd one y = -6x^2
vertex (0,0) and downward
the 3rd one y = -x^2 + 2
vertex (0,2) and downward
#8
Vertex at (0,0)
#11
Same Vertex
#14
Vertex (0,2)
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