Please check my answers.
Find the coordinates of the vertex for the parabola defined by the given quadratic function.
1.f(x) = (x - 4)2 - 4
-I got (4,-4)
Find the axis of symmetry of the parabola defined by the given quadratic function.
3.f(x) = (x + 2)2 + 7
-I got: x=-2
Find the range of the quadratic function.
5.f(x) = 7 - (x + 4)2
I got: (-inifinity,7]