# constant rat eof change

## Quiz by Elaine Courtney

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23 questions

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- Q1a ratio that compares a quantity to one unit of a different quantityUnit Rate30s
- Q2Comparison of two quantitiesRatio30s
- Q3The constant ratio between two quantities: y=kx, where k is the constant of proportionality.Constant of Proportionality30s
- Q4Change in y/ Change in xRate of Change30s
- Q5See imageA climber is on a hike. After 2 hours he is at an altitude of 400 feet. After 6 hours, he is at an altitude of 700 feet.30s
- Q675 ftWhat is the average rate of change?30s
- Q7See imageA scuba diver is 30 feet below the surface of the water 10 seconds after he entered the water and 100 feet below30s
- Q8-2.33 ft/secthe surface after 40 seconds. What is the scuba divers rate of change?30s
- Q92 miles/minute or .033 miles per secondA rocket is 1 mile above the earth in 30 seconds and 5 miles above the earth in 2.5 minutes. What is the rockets rate of change in miles per second? What about miles per minute.30s
- Q10+4 pounds per yearA teacher weighed 165 lbs in 1996 and weighs 205 lbs in 2006. What was the rate of change in weight?30s
- Q11+.05 degrees each yearLet's pretend that over the last 50 years, the average temperature has increased by 2.5 degrees worldwide. What is the rate of change in worldwide temperatures per year?30s
- Q12See imageA plane left Chicago at 8:00 A.M. At 1: P.M., the plane landed in Los Angeles, which is 1500 miles away. What30s
- Q13300 miles per hour ORwas the average speed of the plane for the trip?30s
- Q14See image5 miles per minute30s
- Q152If k=y/x and the rate is 6:3. Then the constant is =30s