Respuesta :

amna04352

Answer:

Minimum; -32

Step-by-step explanation:

y = x² - 8x - 16

y = x² - 2(x)(4) + 4² - 4² - 16

y = (x - 4)² - 16 - 16

y = (x - 4)² - 32

It's a concave up with vertex at (4,-32)