Answer:
[tex](h,k)=(-2,-1)[/tex]
Step-by-step explanation:
[tex]y=-x^{2} -4x-3\\y=-(x^2+4x+3)\\y=-(x^2+4x+3+1)-1\\y=-(x^2+4x+4)-1\\y=-(x+2)^2-1\\y=a(x-h)^2+k[/tex]
