Hi,

Finding the vertex form of a parabola,  where(h,k) is the vertex

Completing the Square:  y = ax^2 + bx + c   ⇒ 

f(x) = -(1/2)x^2 - 2x     + 5

f(x) = -(1/2)(x^2 +4x)    + 5  

f9x) = (-1/2)(x+2)^2 + 2 + 5 = 

f(x) = (-1/2)(x+2)^2 + 7  

V(-2,7)



 

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