Answer:
Vertex: (-1, -2)
Axis of symmetry: x = -1
x-intercepts: (1, 0) and (-3, 0)
y-intercept: (0, -1.5)
Explanation:
The vertex of a parabola is where it slope is 0.
A parabola's axis of symmetry is defined by the equation:
x = {x-coordinate of vertex}
x-intercept(s) are point(s) where the parabola crosses the x-axis.
y-intercept(s) are point(s) where the parabola crosses the y-axis.
See the attached image for a graph of the given parabola with its axis of symmetry and points labeled.