Is It Proportional Equations

What is the equation for a proportional relationship?

• y=kx

• x=y

• y=k+x

• k=x+y

Tags

CCSS.7.RP.A.2C

Does this equation represent a proportional relationship?

• Yes

• No

Tags

CCSS.7.RP.A.2C

Does this equation represent a proportional relationship?

• Yes

• No

Tags

CCSS.7.RP.A.2C

Select all the proportional equations.

• y = 3x

• j = ^-1/₂ h

• d = 19 - 0.25c

• a = x - 2

• 2.5f = g

Tags

CCSS.7.RP.A.2D

Which equation shows a proportional relationship between x and y? (a)  

• y = 3x + 9

• y = 1/2x

• y = 1/2x - 2

• y = x2

Tags

CCSS.7.RP.A.2C

The data in the table represents a proportional relationship. What equation would represent this data accurately? 

Tags

CCSS.7.RP.A.2C

What is k in this proportional relationship?

• 60 

• 120

• 1

• 180

Tags

CCSS.7.RP.A.2B

Does each equation represent a proportional relationship? Choose Yes or No.

y = 13x - 7 ​ (a)  

y = 13x ​ (b)  

• no

• yes

Answer explanation

The first equation y = 13x - 7 does not represent a proportional relationship because it has a y-intercept that is not zero. A proportional relationship must have a y-intercept of zero. The second equation y = 13x does represent a proportional relationship because it has a y-intercept of zero.

Tags

CCSS.MATH.CONTENT.7.RP.A.2.b

CCSS.MATH.CONTENT.7.RP.A.2.c

Shawn makes $7.50 an hour to babysit for his next door neighbors.  Describe the graph of this relationship.

• Proportional

• Non-proportional

Tags

CCSS.7.RP.A.2D

Does the equation show a proportional relationship?

• Yes

• No

Tags

CCSS.7.RP.A.2C