Antwoord:
Vertex is # (2/3, -1 2/3)#
Uitleg:
Gegeven -
# Y = -3x ^ 2 + 4x-3 #
#x = (- b) / (2a) = (- 4) / (2 xx -3) = (- 4) / (- 6) = 2/3 #
#y = -3 (2/3) ^ 2 + 4 (2/3) -3 #
#y = -3 (4/9) +4 (2/3) -3 #
#y = (-12) / 9 + 8 / 3-3 = -1 2/3 #
Vertex is # (2/3, -1 2/3)#
