Hey guys my sister is a idiot

Is the power produced directly proportional to the wind speed, give reasons for your answer?

Ineed here’s a picture of the question

Aclothing designer is selecting models to walk the runway for her fashion show. the clothes she designed require each model’s height to be no more than y inches from 5 feet 10 inches, or 70 inches. which graph could be used to determine the possible variance levels that would result in an acceptable height, x?