True or false someone plz help

What is the result of the following division?

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?

What is the output, or dependent variable of quantity? 1: x 2: f(x) 3: y