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

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 constant of variation?

Back

k = 6.15

Front

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

Back

k = 7/12

Front

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

Back

k = 13

Front

The amount of money earned on a job is directly proportional to the number of hours worked. If $70.00 is earned in 5 hours, how much money is earned in 22 hours of work?

Back

$308

Front

In a direct variation, y=39 when x=3. Find the value of y when x=2.

Back

26

Front

Is this a direct variation?
y=2x

Back

yes

Front

Write an equation for this relationship.

Back

y=1/4x

Front

Which of the given graphs is a direct variation? Options: A, B, C, D

Back

C

Front

Write an equation for this situation.

Back

y=19.25x