Determine the vertex and the x-intercepts. Then sketch the graph.y = -x2 + 2x + 8
A. 
Vertex: (1, 9);
x-intercepts: (-4, 0) and (2, 0)
B. 
Vertex: (1, 9);
x-intercepts: (-2, 0) and (4, 0)
C. 
Vertex: (1, - 9);
x-intercepts: (-2, 0) and (4, 0)
D. 
Vertex: (- 1, 9);
x-intercepts: (-4, 0) and (2, 0)
Answer: B
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