Question 867402
Start from standard form:


{{{y=a(x-h)^2+k}}} has vertex (h,k).  You found the vertex from the graph, so you next need to find the value of a using the other given point of the graph.


First, solve for a.
{{{a(x-h)^2=y-k}}}
{{{a=(y-k)/(x-h)^2}}}
Use the point given point and the vertex.
{{{a=(-1-(-3))/(0-1)^2}}}
{{{a=2/1}}}
{{{a=2}}}


Equation is {{{highlight(y=2(x-1)^2-3)}}}