Posted by ladybug on Wednesday, November 14, 2012 at 1:44pm.
determine the quadratic function of f whose graph is the vertex of (1,4) and the yintercept is 3.

college algebra  Reiny, Wednesday, November 14, 2012 at 2:02pm
since we know the vertex,start with
y = a(x1)^2  4
but (0,3) lies on it , so ...
3 = a(01)^2  4
3+4 = a
a = 1
y = (x1)^2  4
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