Sketch the graph of the quadratic function. Identify the vertex and axis of symmetry.y = 3x2 
A. vertex: (0, 3)
axis of symmetry: x = 0
B. vertex: (0, 0)
axis of symmetry: x = 0
C. vertex: (0, 0)
axis of symmetry: x = 0
D. vertex: (0, 0)
axis of symmetry: x = 0
Answer: D
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