f the zeros of a qudritc function f, are -3 and 5 what is the equation of the axis of symmtery?

Question

f the zeros of a quadratic function f, are -3 and 5 what is the equation of the axis of symmetry? justify your answer

Answer 1

x = -3    and   x = 5

x + 3 = 0   and x - 5 = 0

y = (x + 3)(x - 5)

y = x² - 2x - 15

 

x = -b/2a

x = 2/2

x = 1   is the equation of the axis of symmetry.