Use the graph of the parabola to fill in the table. (a) Does the parabola open upward or downward? 0=0 O upward downward None (b) Find the equation of the axis of symmetry. X equation of axis of symmetry: (c) Find the intercept(s). For both the x- and y-intercept(s), make sure to do the following. . If there is more than one, separate them with commas. . If there are none, select "None". x-intercept(s): y-intercept(s) : (d) Find the coordinates of the vertex. vertex