Question 1003351


{{{f(x) = -2x^2-4x + 7}}}

{{{f(x) = -2(x^2+2x) + 7}}}

{{{f(x) = -2(x^2+2x+b^2)-(-2)b^2 + 7}}}

{{{f(x) = -2(x^2+2x+1^2)-(-2)1^2 + 7}}}

{{{f(x) = -2(x+1)^2+2 + 7}}}

{{{f(x) = -2(x+1)^2+9}}}

{{{y=9}}}
{{{x=-1}}}
({{{x}}},{{{y}}})=({{{-1}}},{{{9}}} )


{{{drawing( 600, 600, -10, 10, -10, 15,
circle(-1,9,.12),locate(-1,9,V(-1,9)),
 graph( 600, 600, -10, 10, -10, 15, -2(x+1)^2+9)) }}}