Question 318422: Find the equation of a parabola that passes through the points (-2,3), (-1,1) and (1,9).
Answer by Fombitz(32388)   (Show Source):
You can put this solution on YOUR website! The general equation for a parabola is,
1.(-2,3):
2.(-1,1):
3.(1,9):
Solve for a,b,c using elimination, substitution, or matrix methods.
Solve for b by subtracting eq. 2 and eq. 3,
Then substituting for b, subtract eq. 3 from eq. 1,
Finally from eq. 3,
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