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constant rat eof change

Quiz by Elaine Courtney

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23 questions
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  • Q1
    a ratio that compares a quantity to one unit of a different quantity
    Unit Rate
  • Q2
    Comparison of two quantities
  • Q3
    The constant ratio between two quantities: y=kx, where k is the constant of proportionality.
    Constant of Proportionality
  • Q4
    Change in y/ Change in x
    Rate of Change
  • Q5
    See image
    A 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.
  • Q6
    75 ft
    What is the average rate of change?
  • Q7
    See image
    A scuba diver is 30 feet below the surface of the water 10 seconds after he entered the water and 100 feet below
  • Q8
    -2.33 ft/sec
    the surface after 40 seconds. What is the scuba divers rate of change?
  • Q9
    2 miles/minute or .033 miles per second
    A 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.
  • Q10
    +4 pounds per year
    A teacher weighed 165 lbs in 1996 and weighs 205 lbs in 2006. What was the rate of change in weight?
  • Q11
    +.05 degrees each year
    Let'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?
  • Q12
    See image
    A plane left Chicago at 8:00 A.M. At 1: P.M., the plane landed in Los Angeles, which is 1500 miles away. What
  • Q13
    300 miles per hour OR
    was the average speed of the plane for the trip?
  • Q14
    See image
    5 miles per minute
  • Q15
    If k=y/x and the rate is 6:3. Then the constant is =

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