Determine the vertex and the x-intercepts. Then sketch the graph.y = x2 + 4x
A. 
Vertex: (2, 4);
x-intercepts: (0, 0) and (4, 0)
B. 
Vertex: (- 2, - 4);
x-intercepts: (0, 0) and (-4, 0)
C. 
Vertex: (- 2, 4);
x-intercepts: (0, 0) and (-4, 0)
D. 
Vertex: (2, - 4);
x-intercepts: (0, 0) and (4, 0)
Answer: B
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