Which of the following statements are always true? 1.
For a parabola written in standard form (
y=ax2+bx+c), if a > 0, the vertex represents the
absolute minimum point on the parabola.
II. Every parabola has one or more real zeros.
III. For a parabola with two real zeros, you can find the
coordinates of the vertex by finding the midpoint
between the roots, and evaluating the function at this x-
value.