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constant rat eof change

Quiz by Elaine Courtney

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23 questions
Show answers
  • Q1
    a ratio that compares a quantity to one unit of a different quantity
    Unit Rate
    30s
  • Q2
    Comparison of two quantities
    Ratio
    30s
  • Q3
    The constant ratio between two quantities: y=kx, where k is the constant of proportionality.
    Constant of Proportionality
    30s
  • Q4
    Change in y/ Change in x
    Rate of Change
    30s
  • 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.
    30s
  • Q6
    75 ft
    What is the average rate of change?
    30s
  • 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
    30s
  • Q8
    -2.33 ft/sec
    the surface after 40 seconds. What is the scuba divers rate of change?
    30s
  • 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.
    30s
  • 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?
    30s
  • 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?
    30s
  • 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
    30s
  • Q13
    300 miles per hour OR
    was the average speed of the plane for the trip?
    30s
  • Q14
    See image
    5 miles per minute
    30s
  • Q15
    2
    If k=y/x and the rate is 6:3. Then the constant is =
    30s

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