17. for each equation, identify the vertex, the axis of symmetry, and indicate whether the
parabola opens up or down. vertex form of the parabola is y = a(x - h + k where (h, k) are the
coordinates of the vertex and the axis of symmetry is x = h.
vertex
axis of symmetry
opens
a) y = 2(x - 2)– 3
b) y = -2x² – 3