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OpenStudy (cathyangs):
A cross section of a flashlight reflector is a parabola. The bulb is located at the focus. Suppose the bulb is located 1/4 in. from the vertex of the reflector. You can model the reflector with a parabola that opens upward and has a vertex at the origin. Write an equation of the parabola to model the cross section of the reflector.
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