In a suspension bridge, the shape of the suspension cables is parabolic. The bridge shown in the figure has towers that are 1000 m apart, and the lowest point of the suspension cables is 200 m below the top of the towers. Find the equation of the parabolic part of the cables, placing the origin of the coordinate system at the lowest point of the cable.
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NOTE: This equation is used to find the length of the cable needed in the construction of the bridge.
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A. x2 = 2,500y
B. y2 = 5,000x
C. x2 = 1,250y
D. x2 = 5,000y
E. x2 = -1,250y
Answer: C
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