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determine coefficients of quadraticGiven (2,9) a point on the graph of f(x), what is t,...
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We'll replace x by 2 in the expression of f(x):
f(2) = 2^2-t*2-3
f(2) = 4 - 2t - 3
We'll combine like terms and we'll get:
f(2) = 1 - 2t
From enunciation, we know that (2,9) belongs to the graph of f(x) => f(2) = 9:
1 - 2t = 9
We'll isolate -2t to the left side.
-2t = 9 - 1 => -2t = 8
We'll divide by -2:
t = 8/-2
The requested coefficient has the following negative value: t = -4
Posted by giorgiana1976 on May 10, 2011 at 11:03 AM (Answer #2)
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