Hi,

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

y = x^2 + 6x - 1  |Completing square to put into vertex form

y = (x+3)^2 - 9 - 1

y = (x+3)^2 - 10   |Note vertex is Pt(-3,-10) a = 1 >0 parabola opens upward



 

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