there are two ways to go about this:

(1) use completing the square to get the quadratic in the form

in which case, the vertex is (h,k)

(2) use the vertex formula.

for the vertex of the quadratic , we have:

so the vertex is

we have an upward opening parabola here. the axis of symmetry is just the vertical line passing through the vertex.What ia the axis of symmetry of the parabola?

if you used method (1) above, the axis of symmetry is

if you used method (2), the axis of symmetry is

set x = 0 and solve for ywhat are the y intercepts of the parabola?

set y = 0 and solve for xApproxemetly what are the x intercepts of the parabola?

the same methods can be used for the second question