A biker cycles 9 miles in 2/3 of an hour. The distance here varies directly with time. What is the constant of variation? (It is the hikers’ rate .)

You are living in aldine, tx and you are planning a trip to six flags in arlington, tx. you look on a map that has a scale of 0.5 inches to 30 miles. if the map shows the scale distance from aldine to arlington is 4 inches, how far is the actual distance?