Ultrasound is used as a nondestructive method of determining whether a support beam for a structure has an internal fracture. In one scanning procedure, if the resulting image is a parabola, engineers know that there is a structural defect. Suppose that a scan produced an image whose equation is . Determine the vertex and focus of the graph of this parabola.
A) vertex: , focus:
B) vertex: , focus:
C) vertex: , focus:
D) vertex: , focus:
E) vertex: , focus:
Correct Answer:
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