Final answer:
331.4 represents the speed of sound at 0°C.
Step-by-step explanation:
The value 331.4 represents the speed of sound at 0°C. This can be determined from the given linear function, S(T) = 0.6T + 331.4, where S(T) represents the speed of sound and T represents the temperature in degrees Celsius. By substituting 0 for T in the equation, we can find that S(0) = 0.6(0) + 331.4 = 331.4 meters per second.