Recognising and representing proportional relationships between quantities

Which of the following is an equation to represent this proportional relationship?

• y=15x

• x=15y

• y=3x

• x=3y

Tags

CCSS.7.RP.A.2C

Select all equations that represent a proportional relationship.

• 
• 

Tags

CCSS.7.RP.A.2C

What does k represent in the equation y = kx?

• independent variable
• constant of proportionality
• dependent variable
• krispy kreme

Tags

CCSS.7.RP.A.2C

A scale drawing of a house shows 9cm ×10cm. If 6cm=12 ft, what are the actual dimensions?

• 9ft x 10ft
• 1ft x 2ft
• 12ft x 6ft
• 18ft x 20ft

Tags

CCSS.7.RP.A.2C

There are 42 students  in Kim's band class.Of those  students ,31 are girls.Which propitiation can be used to find  x, the precent of students in the class that are boys  

•  $\frac{31}{42}=\frac{x}{100}$  

•  $\frac{11}{31}=\frac{x}{100}$  

•  $\frac{31}{11}=\frac{x}{100}$  

•  $\frac{11}{42}=\frac{x}{100}$  

Tags

CCSS.7.RP.A.2C

Sami wants to enlarge a 4 x 6 photo so it has a width of 15. What is the new length of the photo?

• 3

• 15

• 10

• 2

Tags

CCSS.7.RP.A.2C

If the relationship in the table is proportional, write its equation.

• The relationship is not proportional

Tags

CCSS.7.RP.A.2C

Write the equation of the proportional relationship using the format y = kx.

Tags

CCSS.7.RP.A.2C

Write a y=kx equation that models the graph of a proportion passing through the point (10, 5).

• y=2x

• y=10x

• y=5x

• y=0.5x

Tags

CCSS.7.RP.A.2C

If the constant of proportionality is 7, which of the following is the correct proportional equation?

• y=7k
• y=k7
• y=kx
• y=7x

Tags

CCSS.7.RP.A.2C