Question

Find the equation of the quadratic function with zeros at -1 and 1 and a vertex a t0,-6

Answer 1

hello :

the quadratic function is :

  f(x) = a(x-1)(x+1)

but ; f(0) = -6

a(0-1)(0+1) = -6 

-a = -6

a=6

the equation is : 6(x-1)(x+1) = 0