Lesson 3 Problem-Solving Practice Equations in y mx Form = 1. The amount Candice earns varies directly with 2. The number of cars built varies JOBS MANUFACTURING the number of magazines she sells. How much does directly as the number of hours the production line Candice earn for each magazine sale? operates. What is the ratio of cars built to hours of production? 3. A car drives 283.5 miles in 4.5 hours. 4. The number of kilograms that an DRIVING MEASUREMENT Assuming that the distance traveled varies directly with object weighs varies directly as the number of pounds. the time traveled, how far will the car travel in 7 hours? If an object that weighs 45 kilograms weighs about 100 pounds, about how many kilograms is an object that weighs 70 pounds? 5. The amount of cable that is wound on a 6. The width of a rectangle varies directly RECORDING GEOMETRY spool varies directly with the amount of time that as its length. What is the perimeter of a rectangle that passes. Determine the speed at which the cable moves. is 15 inches long?
Lesson 3 Problem-Solving Practice Equations in y = mx Form 1. JOBS The amount Candice earns varies directly with the number of magazines she sells. How much does Candice earn for each magazine sale? 2. MANUFACTURING The number of cars built varies directly as the number of hours the production line operates. What is the ratio of cars built to hours of production? 3. DRIVING A car drives 283.5 miles in 4.5 hours. Assuming that the distance traveled varies directly with the time traveled, how far will the car travel in 7 hours? 4. MEASUREMENT The number of kilograms that an object weighs varies directly as the number of pounds. If an object that weighs 45 kilograms weighs about 100 pounds, about how many kilograms is an object that weighs 70 pounds? 5. RECORDING The amount of cable that is wound on a spool varies directly with the amount of time that passes. Determine the speed at which the cable moves. 6. GEOMETRY The width of a rectangle varies directly as its length. What is the perimeter of a rectangle that is 15 inches long?