Question 910119
{{{y=-3(x+9)^2-1}}}


{{{ graph( 600, 600, -20, 10, -10, 10, -3(x+9)^2-1,-9) }}} 

({{{-9}}}, {{{-1}}})

max{y = -3 (x+9)^2-1} = -1 at x = -9

domain: R  (all real numbers)

range:{y element R : y<=-1}

Every parabola has an axis of symmetry which is the line that runs down its 'center'. This line divides the graph into two perfect halves.

draw the axis of symmetry: it's the line parallel to {{{y}}} and goes through{{{x = -9}}}