Answer:
x=3 is the axis of symmetry
The vertex is (3,-16)
Step-by-step explanation:
y = x^2 - 6x-7
I will find the zeros
0 = (x-7)(x+1)
The zeros are 7,-1
The axis of symmetry is 1/2 way between the zeros
(-1+7)/2 = 6/2 = 3
x=3
The vertex is at x=3
y = (3-7)(3+1)
= -4(4) = -16
The vertex is (3,-16)
