The parabola with an equation of [tex]y=x^{2} -9x+3[/tex] opens (up OR down) because 'a' is (positive OR negative). The vertex of the parabola is at the (bottom OR top) and the y-value is a (maximum OR minimum)

The parabola with an equation of texyx2 9x3tex opens up OR down because a is positive OR negative The vertex of the parabola is at the bottom OR top and the yva class=