Question 851067
Standard Form for Parabola, vertical:  {{{y=a(x-h)^2+k}}}, vertex at (h,k), concave up if {{{a>0}}}; concave down if {{{a<0}}}.


{{{y=2(x-h)^2+k}}}, and for your question, {{{h=5}}} and {{{k=8}}}.