SOLUTION: What is the equation of the quadratic function that has a minimum at (7,-3) and goes through (9,9)?

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Question 1162223: What is the equation of the quadratic function that has a minimum at (7,-3) and goes through (9,9)?
Answer by Edwin McCravy(20054)   (Show Source): You can put this solution on YOUR website!
The minimum point of a quadratic formula is the vertex.



Use vertex formula:





Substitute in





Substitute (x,y) = (7,-3)







Substitute (x,y) = (9,9)









Multiply the first equation by -1

 

Add the two equations term by term:




















Edwin
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