The graph of y = (2x – 4)(x – 4) is a parabola in
the xy-plane. In which of the following equivalent
expressions do the x- and y-coordinates of the vertex
of the parabola appear as constants or coefficients?
A) y = 2x2 – 12x + 16
B) y = 2x(x – 6) + 16
C) y = 2(x – 3)2 + (–2)
D) y = (x – 2)(2x – 8)
