SOLUTION: Can you give me an example of a parabola equation with the vertex of (2,1) and opens descendingly?

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Question 1032370: Can you give me an example of a parabola equation with the vertex of (2,1) and opens descendingly?

Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52776) About Me  (Show Source):
You can put this solution on YOUR website!
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Can you give me an example of a parabola equation with the vertex of (2,1) and opens descendingly?
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Parabola opened downward: y = 1+-+%28x-2%29%5E2.




Figure. Parabola y = 1+-+%28x-2%29%5E2

Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
"Opens descendingly" is poor for the description. Do you want the vertex as a minimum or as a maximum?

y=a%28x-2%29%5E2%2B1

The vertex is a minimum for a%3E0, but a maximum for a%3C0.