To calculate : The focal length (the distance from the vertex to the focus).
The focal length is
Given information :
Scientists studying dolphin echolocation can simulate the projection of a dolphin's clicking sounds using computer models. The models originate the sounds at the focus of a parabolic reflector. The parabola in the graph models the cross section (with units in inches) of the reflector used to simulate sound projection for a bottlenose dolphin.
Calculation :
Given parabola opens to right hand side. So, the equation of parabola is
Coordinates of the vertex is
Substitute the values in the equation to find the value of
Thus,
Focus of parabola lie
Therefore, the focal length is
Chapter 8 Solutions
Holt Mcdougal Larson Algebra 2: Student Edition 2012
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