Question

How are the zeros of a polynomial function used to create a graph?

What key graphical features are obtained from a polynomial function?

Answer 1

The zeroes are used to plot the points at y = 0

the midpoint between the zeroes gives the x value for the vertex, where the y value can either be calculated or sketched.

a parabola makes a concave curve up or down and is usually used to determine when an object hits the ground when thrown in an arc.