Point (a)
The parabola opens upward as we see in the graph.
Point (b)
Given that the vertex is at x=-3, then the equation of the line of symmetry is x=-3.
Point(c)
Based on the graph we can see that the coordinates of the vertex are (-3,3).
Point (d)
There is no x-intercept as the parabola does not touch the x-axis.
The y-intercept is y=7 given that the graph touches the y-axis at the coordinates (0,7).
