Question 960140
The quadratic is in vertex form. 
There are no limitations on the domain:({{{-infinity}}},{{{infinity}}}).
The parabola opens downwards because of the negative quadratic coefficient (-1) so the value at the vertex is a maximum.
Range: ({{{-infinity}}},{{{3}}})
.
.

{{{graph(300,300,-8,8,-8,8,-(x+4)^2+3)}}}