Direct Variation

Front

Eduardo counted ten seconds between seeing lightning and hearing thunder, and he knew that the lightning was about 2 miles away. What is the constant of variation?

Back

k = 5

Front

Equation of variation for counting seconds between lightning and thunder to determine distance.

Back

y = 5x

Front

Eduardo counted four seconds between a flash of lightning and thunder. How far away was the lightning? Options: 40 miles, 4/5 miles, 8 miles, 20 miles

Back

4/5 miles

Front

Shawn’s weekly pay is directly proportional to the number of hours worked. Pay for 20 hours is $123.00. What is the constant of variation?

Back

k = 6.15

Front

A person’s weekly pay is directly proportional to the number of hours worked. Shawn’s pay is $123.00 for 20 hours of work. What is the equation of variation?

Back

y = 6.15x

Front

A person’s weekly pay is directly proportional to the number of hours worked. Shawn’s pay is $123.00 for 20 hours of work. Find the amount of pay for 31 hours of work.

Back

$190.65

Front

At top speed, a rabbit can cover 7 miles in 12 minutes. What is the constant of variation?

Back

k = 7/12

Front

At top speed, a rabbit can cover 7 miles in 12 minutes. What is the equation of variation? Options: y = 7x, y = 12x, y = 12/7x, y = 7/12x

Back

y = 7/12x

Front

At top speed, a rabbit can cover 7 miles in 12 minutes. How long would it take to cross 220 miles at this rate?

Back

377.1 minutes

Front

A dishwasher uses 65 gallons of water to wash 5 loads of dishes. What is the constant of variation?

Back

k = 13