(a) The parabola opens upward.
- This is because the graph has a minimum.
(b)
- The vertex is the point where the graph changes from increasing to decreasing.
(c)
.
- The axis of symmetry is the vertical line passing through the vertex.
(d) x-intercepts: (1,0) and (5,0); y-intercept: (0,5)
- The x-intercepts are where y=0, and the y-intercept is where x=0.