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?
k = 10
k = 2
k = 5
k = 1/5
2. Multiple Choice
30 seconds
1 pt
Eduardo counted ten seconds between seeing lightning and hearing thunder, and he knew that the lightning was about 2 miles away. What is the equation of variation?
y = 10x
y = 2x
y = 5x
y = 1/5x
3. Multiple Choice
30 seconds
1 pt
Eduardo counted ten seconds between seeing lightning and hearing thunder, and he knew that the lightning was about 2 miles away. If he counted four seconds between the next flash of lightning and thunder, about how far away was the lightning?
40 miles
4/5 miles
8 miles
20 miles
4. Multiple Choice
1 minute
1 pt
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?
k = 123
k = 20
k = 6.15
k = 0.16
5. Multiple Choice
30 seconds
1 pt
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?
y = 123x
y = 20x
y = 6.15x
y = 0.16x
6. Multiple Choice
1 minute
1 pt
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.
$3813
$620
$190.65
$4.96
7. Multiple Choice
30 seconds
1 pt
At top speed, a rabbit can cover 7 miles in 12 minutes. What is the constant of variation?
k = 7
k = 12
k = 12/7
k = 7/12
8. Multiple Choice
30 seconds
1 pt
At top speed, a rabbit can cover 7 miles in 12 minutes. What is the equation of variation?
y = 7x
y = 12x
y = 12/7x
y = 7/12x
9. Multiple Choice
30 seconds
1 pt
At top speed, a rabbit can cover 7 miles in 12 minutes. If a rabbit could continue at this rate indefinitely, how long would it take the rabbit to cross the 220-mile expanse of the Mojave Desert?
31.4 minutes
18.3 minutes
377.1 minutes
128.1 minutes
10. Multiple Choice
1 minute
1 pt
A dishwasher uses 65 gallons of water to wash 5 loads of dishes. What is the constant of variation?
k = 13
k = 65
k = 5
k = 1/13
11. Multiple Choice
30 seconds
1 pt
A dishwasher uses 65 gallons of water to wash 5 loads of dishes. What is the equation of variation?
y = 13x
y = 65x
y = 5x
y = 1/13x
12. Multiple Choice
30 seconds
1 pt
A dishwasher uses 65 gallons of water to wash 5 loads of dishes. How many gallons of water would be used to wash 12 loads?