Already graphed and tried to figure it out.
Domain and range are correct !!!!
Relative max occurs at ≈ (2.816, 1.089)
Relative min occurs at ≈ (1.184, - 1.089)
You have the end behavior almost correct, RP
As the function approaches + inf....the end behavior is - inf
As it approaches -inf.....the end behavior is + inf
Increasing intervals [ where the function rises from left to right ] = (1.184, 2.816 )
Decreasing intervals [ where it falls from left to right ] = (-inf, 1.184) U (2.816, inf )
Here's the graph : https://www.desmos.com/calculator/mk1cbfvwvh
Is this all clear to you ????