Question

The points (–1, 14) and (9, 14) are located on the same parabola. The equation for the axis of symmetry for this parabola is

Answer 1

x = 4

Explanation:

Since the two points (-1, 14) and (9, 14) lie on the same horizontal line y = 14,

and intersects this parabola. We know by symmetric property of the parabola that the line of symmetry goes through the midpoint of (-1, 14) and (9,14)

at x = (-1 + 9)/2 = 8/2 = 4

at x = 4 is our line of symmetry