Question

Please explain how to do this

Answer 1

min y = 1

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)