Hi

the vertex form of a Parabola opening up(a>0) or down(a<0) is  

where(h,k) is the vertex  and  x = h  is the Line of Symmetry

You are comparing YOur Equations to this vertex Form for a Parabola

a. Will either graph be narrower? no, (coefficient of the squared term the same

 b. What is the position of the vertex for each graph V(0,0) and V(0,-6)

 c. Will either graph open downward? NO, coefficient of the squared term > 0

 d. What is the range for each graph?  y ≥  0  and y ≥  -6

 

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