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OpenStudy (anonymous):
Question 10 [9.01] Determine whether the graph of y = x2 + 4x − 7 has a maximum or minimum point, then find the maximum or minimum value. Minimum; (-11, -2) Maximum; (-11, -2) Maximum; (-2, -11) Minimum; (-2, -11)
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OpenStudy (noelgreco):
The x-value of the vertex of a parabola is -b/2a. For a>0 the vertex is at the minimum.
OpenStudy (anonymous):
-11,-1 minimum?
OpenStudy (noelgreco):
No. What is the value of -b/2a?
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