Respuesta :

nobillionaireNobley
For a direct variation, f(x) = kx. Therefore, for f(x) = 30x, constant of variation (k) = 30.
taskmasters
I believe the correct answer from the choices listed above is option B. The constant for variation of the relationship f(x)=30x would be 30. The constant of variation is the number that relates two variables that are directly proportional or inversely proportional to one another.

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