Suppose that f(x) = x 2 + 4x - 21 (a) What is the vertex of f?
Question:
Suppose that f(x) = x2 + 4x - 21
(a) What is the vertex of f?
(b) What are the x-intercepts of the graph of f?
(c) Solve f(x) = -21 for x. What points are on the graph of f?
(d) Use the information obtained in parts (a)-(c) to graph f(x) = x2 + 4x - 21.
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a The vertex is 225 b The xinterce...View the full answer
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