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Proportional or Non-Proportional

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  • Benito saves $6 out of every $20 he earns. He earned $90 one month. How much did he save?
    $27
  • Is this a proportional relationship? If so, find the constant of proportionality and write an equation.
    Yes, the constant of proportionality is 5. y=5x
  • Bob is taking his son to look at a college 150 miles from their home. In the first hour they drive at a rate of 60 mph. If they want to reach their destination in 2 ½ hours, what speed must they average the last 1 1/2 hours?
    60 miles per hour
  • Is this a proportional relationship? If so, find the constant of proportionality and write an equation.
    Yes, the constant of proportionality is 1/6. y=1/6x
  • An airplane flies 105 miles in ½ hour. How far can it fly in 1 ¼ hours at the same rate of speed?
    262.5 miles
  • The ratio X to Y is represented by the relationship 3 to 5. Make a ratio table to represent a proportional relationship between X and Y.
    3 to 5, 6 to 10, 9 to 15, 12 to 20, 15 to 25
  • You earn $33 in 8 hours. At that rate, how much would you earn in 5 hours?
    $20.63 (20.625)
  • Jack delivered 90 newspapers in 20 minutes. At this rate, how long will it take him to deliver 135 newspapers?
    30 minutes
  • You jog 3.6 miles in 30 minutes. At that rate, how far will you run in 20 minutes?
    2.4 miles
  • What is the cost of six filters if eight filters cost $39.92?
    $29.94
  • Is this a proportional relationship? If so, find the constant of proportionality and write an equation.
    Yes, the constant of proportionality is 7. y=7x
  • If one gallon of paint covers 825 sq. ft., how much paint is needed to cover 2640 sq. ft.?
    3.2 gallons
  • Is this a proportional relationship? If so, find the constant of proportionality and write an equation.
    Yes, the constant of proportionality is 1/3. y=1/3x
  • Jasmine is building bird houses. It takes 4 1/2 hours to build 4 hours. How many birdhouses could she build in 1 hour?
    1 1/8 or 1.125
  • A chef filled up 3 containers with mashed potatoes. He ended up using 2 1/4 pounds of potatoes. Find the the amount of containers the chef will fill with 1 pound of mashed potatoes.
    12/9, 4/3, 1 3/9, or 1 1/3 containers
  • Is this a proportional relationship? Why or why not? If so, find the unit rate
    No, the line does not go through the origin so the ratios are not equivalent.
  • Is this a proportional relationship? If so, if the unit rate.
    No, the line is not straight and it does not go through the origin so the ratios are not equivalent.
  • Is this a proportional relationship? If so, find the unit rate.
    No, the ratios are not equivalent. 3 does not equal 2.5
  • Sparky's Car Wash can wash 20 service vehicles in 5 hours. How long would it take the company to wash 45 service vehicles?
    11 hours and 15 minutes 11.25 or 11 1/4 hours
  • Is this a proportional relationship? If so, find the unit rate
    Yes, the unit rate is 0.4. y=0.4x
  • Is this a proportional relationship? If so, find the constant of proportionality and write an equation.
    No, the line does not go through the origin which means the ratios are not equivalent.
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