SOLUTION: How do you find the equation of a parabola that passes through the points (5,3) (3,6) and (-4,5) ?

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Question 813219: How do you find the equation of a parabola that passes through the points (5,3) (3,6) and (-4,5) ?
Answer by josgarithmetic(39620)   (Show Source): You can put this solution on YOUR website!
Use general form for each point and solve simultaneous equations which these points produce. Your variables are now a, b, and c. You might want to set up as a matrix and perform elementary row operations.

Refine this system:




System:



You might want to use some matrix handling software to solve the system.

After that, work with it any way you want.


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Using the matrix calculator page, http://www.math.purdue.edu/~dvb/gaussian.php
Values obtained were a=-.01825, b=-0.0397, c=7.7619

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