Answer:
min y = 1
Step-by-step explanation:
f(x) = 2x² - 8x + 9
leading coefficient is positive, parabola results an UPWARD opening.
It has a minimum point
f'(x) = 4x - 8
4x - 8 = 0
x = 2
y = 2*4 - 8*2 + 9 = 1
extreme is (2,1)
