Write the equation of the parabola in vertex form. a. y = (x-2)^2 + 4b. y = (x-4)^2 - 4c. y = x^2 - 4d. y= (x-2)^2

The vertex form is

where (h,k) is the vertex, and a is the coefficient.

On the graph, the vertex is point (2,0), so our vertex form is

which is answer D. We remove the a, since the parabola is not stretched, just shifted.

127 millimeters is the answer