SOLUTION: what equation is needed for a parabola which passes through points (0,3)(1,6)(-1,8)

Question 976776: what equation is needed for a parabola which passes through points (0,3)(1,6)(-1,8)
Found 2 solutions by Alan3354, josmiceli:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
what equation is needed for a parabola which passes through points (0,3)(1,6)(-1,8)
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y = ax^2 + bx + c
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Use the points to make 3 equations, then solve for a, b & c
The 1st one is easy: c = 3
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Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The general formula is:

( 0,3 )

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( 1,6 )

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( -1,8 )

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Add the equations

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---------------

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The equation is:

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check:
( 0,3 )

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You can check the other 2 points

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