E-CS01 · Build a graph from its vertex
The graph of a quadratic function \(f\) has vertex \((2,-7)\) and passes through \((0,5)\).
Find \(f(x)\) in completed-square form.
Find the exact x-intercepts of the graph.
Find all \(x\) in \([1,6]\) for which \(f(x)\le5\).
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