Since "a" < 0, this PARABOLA will open DOWNWARDS, and will therefore have a MAXIMA.





The x-coordinate of the vertex (or h) will be at 

The x-coordinate of the vertex (or h) will be at , or at , or at x = 1

 ------ Substituting 1 for x 

f(x) or y = - 2 + 4 - 1

f(x) or y or k = 1  

Thus, the PARABOLA has a MAXIMA at (, ) 

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