Answer:

1.)Given:y=-2x²

Domain:  (all real numbers)

Range:  {y element R : y>=0} (all non-negative real numbers)

Opening of the parabola:  Downward

Vertex:  (0,0)

Axis of symmetry:  x=0

x-intercept:  x = 0

y-intercept: (0, 0)

2.) Given:y=-x²+4

Domain:  (all real numbers)

Range:  {y/y<=4}

Opening of the parabola:  Downward

Vertex:  (0, 4)

Axis of symmetry:  x = 0

x-intercept:  (2, 0), (-2,0)

y-intercept:  (0, 4)

3.) Given:y=(x+1)²

Domain:  (all real numbers)

Range:  {y/y>=0} (all non-negative real numbers)

Opening of the parabola:  Upward

Vertex:  (-1, 0)

Axis of symmetry:  x = -1

x-intercept:  (-1, 0)

y-intercept:  (0, 1)

4.) Given:y=2x²-4x+4

Domain:  (all real numbers)

Range:  {y/y>=2}

Opening of the parabola:  Upward

Vertex:  (-1, -2)

Axis of symmetry:  x = 1

x-intercept:  None

y-intercept: (0, 4)

F/b name mo send ko nalang sa iyo ung graph :)