Florida Math, Constant of Proportionality

Water is steadily dripping from a faucet into a bowl. You want to write an equation that represents the number of milliliters y of water in the bowl after x seconds. What is the constant of proportionality for the relationship between the number of milliliters y of water in the bowl and the time in seconds​ x? What is the​ equation?

Tags

CCSS.7.RP.A.2B

Suppose the relationship between x and y is proportional. When x is​ 29, y is 275.5. Find the constant of proportionality of y to x. Use the constant of proportionality to find x when y is 408.5.

• 43

• 3,880.75

• 45

• 3,909.25

Tags

CCSS.7.RP.A.2B

The width of a row of identical townhouses is in a proportional relationship with the number of townhouses. The diagram suggests a row of 5 townhouses and gives their total width.Use the constant of proportionality to find the width of a row of 9 townhouses.

• 169

• 179

• 189

• 199

A recipe calls for 3 ounces of flour(x) for every 2 ounces of sugar(y). Find the constant of proportionality.

• 2/3

• 3/2

• 5

• 6

Tags

CCSS.7.RP.A.2B

Identify the constant of proportionality.

• k = 2x

• k = 2

• k = 4

• none

Tags

CCSS.7.RP.A.2B

What is the constant of proportionality?

• 7

• 14

• 10

• 21

Tags

CCSS.7.RP.A.2B

Identify the constant of proportionality

• k = 1/90

• k = 1/30

• k = 90

• k = 30

Tags

CCSS.7.RP.A.2B

What is the constant of proportionality?

• $3

• $4

• $2

• $9

Tags

CCSS.7.RP.A.2B

Identify the unit rate (scale factor) in this equation.

• 2x

• 2

• 4

• none

Tags

CCSS.7.RP.A.2D

Name the constant of proportionality.

• 20

• 40

• 16

• 35

Tags

CCSS.7.RP.A.2B