Explain how you can find the axis of symmetry of a parabola with x-intercepts located at (−9,0)and(−5,0). Then find the equation of the axis of symmetry.

Answer 1

The axis of symmetry is the vertical line passing thru the vertex. It the x intercepts are at -9 and -5 then the middle of these 2 points is at x=-7 which is the axis of symetry