ind the coordinates of the vertex of the parabola
y = 2x2 − 4x + 9 b) One train route follows the curve
y = 2x2 − 4x + 9,
and the other follows y = x2. Assume that distance along both axes is measured in miles. The railroad wants to construct a north-south maintenance road PQ between the two routes. Where should the road be located so that it is as short as possible?
Q(x, y) =
(smaller y-value)
P(x, y) =
(larger y-value)

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