Topic 2 Mid-topic Quiz

An equation represents a proportional relationship if it's written in this form ______________

• y = k+x

• y = kx

• y= k/x

• x= ky

Tags

CCSS.7.RP.A.2C

Sabrina rides her bike 3/4 of a mile in 5 minutes, or 1/12 of an hour. What is her unit rate in miles per hour. 

• 3/4 x 1/12 = 1/16 miles per hour

• 3/4 + 1/12 = 5/6 miles per hour

• 3/4 x 12/1 = 9 miles per hour

• 1/12  $\div$  3/4 = 1/9 miles per hour

Tags

CCSS.7.RP.A.1

Does this table show a proportional relationship and if so what is the constant of proportionality. (number of plants =x, number of flowers =y)

• No, these values are not proportional.

• Yes, the constant of proportionality is 2/3, or .666666

• Yes the constant of proportionality is 3/2, or 1.5

• yes the constant of proportionality is 5.

Tags

CCSS.7.RP.A.2B

Mrs. Schlottman went to the store to buy some more expo markers. She had a choice of different sized boxes. She could choose 8 markers for $4.80, 3 markers for $1.80, or 12 markers for 9.60. Is the cost y proportional to the number of markers, x. If it is, write an equation to represent this relationship.

• This is not a proportional relationship.

• Proportional: y= 5/3x

• Proportional y = .80x

• Proportional: y = .60x

Tags

CCSS.7.RP.A.2A

Erick earns $52.50 for running his lemonade stand for 2 hours. Elija makes $82.50 for running his Gatorade stand for 3 hours. Who earns more per hour? How much more?

• They each earn the same amount per hour.

• Erick makes $1.25 more per hour than Elija

• Elijah makes $0.25 more per hour than Erick

• Elijah makes 1.25 more per hour than Erick

Tags

CCSS.6.RP.A.3B

If there are 80 calories n 1/2 cup of Coke, how many calories are in 4 cups of coke?

• 320 calories

• 40 calories

• 640 calories

• 840 calories

Tags

CCSS.6.RP.A.3B