SOLUTION: Write the equation of a parabola with a vertex of (-2,-3) and contains the point (1,2)

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Question 830051: Write the equation of a parabola with a vertex of (-2,-3) and contains the point (1,2)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Write the equation of a parabola with a vertex of (-2,-3) and contains the point (1,2)
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Assuming the parabola opens up you get:
y = a(x+2)-3
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Solve for "a":
2 = a(1+2)-3
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2 = 3a - 3
3a = 5
a = (5/3)
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y = (5/3)(x+2)-3
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y = (5/3)x + (10/3)-(9/3)
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y = (5/3)x + (1/3)
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Cheers,
Stan H.
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