Question 911619
The graph opens downward, since just looking at the expression shows you the coefficient on {{{x^2}}} is negative.  Symmetry axis is between the roots in the exact middle and you can read the roots directly from the quadratic expression because it is given in its factored form.    Symmetry axis is the middle of x=-3 and x=1.


Domain, range, and vertex will best be found through converting into standard form as discussed here:  <a href="http://www.algebra.com/my/Completing-the-Square-to-Solve-General-Quadratic-Equation.lesson?content_action=show_dev">http://www.algebra.com/my/Completing-the-Square-to-Solve-General-Quadratic-Equation.lesson?content_action=show_dev</a>