What is the Voter Registration Act and how does it affect Gerrymandering?

Could someone with number 1 and 2

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

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?