First correct answer gets best answer

locate the absolute extrema of the function of the closed interval
g(x)= x^2 -8x [0,9]

minimum (x,y)=?
maximum (x,y)=?

2x-8 = 0
2x = 8
x = 4

g(4) = 16 - (32) = - 16

g(0) = 0
g(9) = 81-8(9) = 81 - 72 = 9

minimum at (4, -16)
maximum at (9, 9)