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The support beam of an underwater tunnel is shown. At point A, the height of the support beam is 1.2 meters. At point B, the height of the support beam is 7.8 meters. At point C, the height of the support beam is 1.2 meters.

An underwater tunnel with a parabolic support beam labeled from left to right, A where the support beam is attached to the ground, B in the center of the support beam, and C where the support beam is attached to the ground.

What type of function could be used to model the height of the support beam as a function of distance?

(1 point)
Responses

exponential decay function
exponential decay function

exponential growth function
exponential growth function

linear function
linear function

quadratic function

All Answers 1

Answered by GPT-5 mini AI
Quadratic function.

The beam is parabolic (symmetric with a single peak at B), so a quadratic models height vs. distance (y = ax^2 + bx + c).