Stephen is walking from his house to his friend Sharon's house. When he begins 20 blocks away, he looks at his watch. He looks again when he is 19 blocks away and finds that 8 minutes have passed. Enter the coordinates of the two ordered pairs for these data in the form (time t, blocks y).

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?