Posted by kathleen on Sunday, July 25, 2010 at 7:31am.
complete the square:
f(x)=x^2-5x+25/4 + 14-25/4
= (x-5/2)^2 + 7.75
so the vertex is at x=5/2, y=7.75
axis of symmetry x=5/2
domain all real x you do the rest. On the direction of the graph, what happens as x gets very large?
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