### -The vertex is (-b/2a , f(-b/2a))
-The axis of symmetry is x=-b/2a
-The y-intercept is C
-If a > 0, the parabola opens up
-If a < 0, the parabola opens down
-If |a| > 1, the parabola is thinner than the parent
-If |a| < 1, the parabola is wider than the parent