The line of symmetry in a graph is a vertical line in the form x = # that divides the parabola in half. We can also think about the line of symmetry as a mirror, everything on one side is a mirror image of what is on the other. Move the parabola so that the line shown on the graph is the axis of symmetry and your zeros are x = 1 and x = 7 . What is your line of symmetry? What is your vertex?
