Determine the vertex of the parabola y=2x2−8x+11y = 2x^2 - 8x + 11y=2x2−8x+11.
(2,3)(2, 3)(2,3)
(1,5)(1, 5)(1,5)
(2,11)(2, 11)(2,11)
(4,11)(4, 11)(4,11)