document.write( "Question 1170036: What is the equation written in vertex form of a parabola with a vertex of (9, -1) that passes through (7, 7)?
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\n" ); document.write( "What is the equation written in vertex form of a parabola with a vertex of (9, -1) that passes through (7, 7)?
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Vertex form of a parabola: 
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document.write( " ---- Substituting (7, 7) for (x, y), and (9, - 1) for (h, k)
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document.write( " ---- Substituting 2 for a, and (9, - 1) for (h, k) \n" );
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