<PRE><B>Question 675648</B>
Find the quadratic function {{{f(x)=ax^2+bx+c}}} for which
You have 3 points. Substitute into the quadratic form and solve the system:
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f(1)=6 ::: a + b + c = 6
f(-2)=18::4a -2b + c = 18
f(2)=6::::4a +2b + c = 6
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I used a matrix method on a TI-84 to get:
a = 1
b = -3
c = 1
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Equation:
y = x^2 -3x + 1
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Cheers,
Stan H.</PRE>