Question 1087414:  Find the standard form f(x)=a(x-h)^2+k of the quadratic function that has zeros of 1/5 and 9/5, and has it's vertex at the point (1,-1).  
 Found 2 solutions by  josgarithmetic, MathTherapy: Answer by josgarithmetic(39630)      (Show Source):  Answer by MathTherapy(10557)      (Show Source): 
You can  put this solution on YOUR website! Find the standard form f(x)=a(x-h)^2+k of the quadratic function that has zeros of 1/5 and 9/5, and has it's vertex at the point (1,-1).  
Why don't you look at a similar problem you posted earlier, and try this one? 
Don't you think that's a better way to learn how to do the problem, especially when you get it right? 
Whatever you do, DO NOT follow the GARBAGE the other person suggested. Just substitute a point, preferably   
and the vertex,   for (x, y) and (h, k), respectively, in the VERTEX form of a parabolic-equation, to get the value of "a." 
Then substitute "a" and (h, k) to get the equation, in VERTEX form.  
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