Answer:
D) (4,-4)
The vertex (h,k) = (4,-4)
Step-by-step explanation:
<u><em>Explanation:-</em></u>
Given that the quadratic function
y = x² - 8x +12
y = x² - 2(4) x+ (4)²-(4)² +12
y = (x-4)² -16 +12
y = (x-4)² -4
Comparing vertex form of the standrad parabola
y = a(x-h)²+k
The vertex (h,k) = (4,-4)