Question 1191804
{{{y=a(x+3)^2+5}}}


{{{a(x+3)^2=y-5}}}

{{{a=(y-5)/(x+3)^2}}}

{{{substitutetheincludedpoint}}}

{{{a=(-3-5)/(1+3)^2}}}

{{{a=-8/16}}}

{{{a=-1/2}}}


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