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Cosider the quadratic function `y = -x^2-6x-8`.

The vertex is the point

The equation of the line of symmetry is  

The vertical intercept is the point

The horizontal intercept(s) is/are the point(s) (separate multiple answers with a comma)

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   x  x    n  |   | (   ) π DNE
   x    (   ) π DNE
( ) ( ] [ ) [ ] —∞ DNE
< > or All Real Numbers DNE
log logn ln n  | | e 
sin cos tan arcsin arccos arctan  
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