Algebra
posted by Jenn .
Determine the quadratic function of f whose vertex is (2,1) and passes through (3,1)
f(x)=

from the vertex, we know that
y = a(x2)^2  1
since y(3) = 1,
1 = a(32)^21
1 = a1
a = 2
y = 2(x2)^2  1
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