Identifying the Characteristics of a Parabola

The vertex is the turning point of the graph. We can see that the vertex is at $\left(3,1\right).$ Because this parabola opens upward, the axis of symmetry is the vertical line that intersects the parabola at the vertex. So the axis of symmetry is $x=3.$ This parabola does not cross the $x\text{-}$ axis, so it has no zeros. It crosses the $y\text{-}$ axis at $\left(0,7\right)$ so this is the y-intercept.