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Thu 29 Sep, 2005 03:02 pm
What is the equation of a parabola that goes through points (0,1), (-1,6),
and (2,3)?
(1) y = x^2 + 1 (3) y = x^2 - 3x + 1
(2) y = 2x^2 + 1 (4) y = 2x^2 - 3x + 1
You could plug the coordinates of each of the points into each of the equations and see which equation is valid for all three points.
(4) satisfies all those data points doesn't it?
0 = 2 * 1^2 - 3*1 + 1
6 = 2 * -1^2 - 3 * -1 + 1
3 = 2* 2^2 - 3*2 + 1
Maybe that'd be the answer!
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