Quadratic function
posted by Jenn .
Determine the quadratic function f whose graph is given.
The vertex is (3,13) and the yintercept is 4
f(x)=

f(x) = a(x+3)^2  13
since f(0) = 4,
4 = 9a13
a = 1
f(x) = (x+3)^2  13
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