Question 1005359
Standard Form model, {{{y=a(x-h)^2+k}}}, for vertex point (h,k).


Point included (-4,2) and the vertex  (-5,-2).


{{{y-k=a(x-h)^2}}}
{{{(y-k)/(x-h)^2=a}}}
{{{a=(2-(-2))/(-4-(-5))^2}}}
{{{a=4/(1)^2}}}
{{{highlight(a=4)}}}