Proportional Relationships Equations

Write the equation for the table given

• y = 1/3x
• y = 3x
• y = 1/2x
• x = 3y

Tags

CCSS.6.EE.C.9

Is the given table a proportional relationship? If so, write an equation that relates y to x.

• Yes;  y=1/3x
• Yes;  y=3x
• Yes;  y=5x 
• No

Tags

CCSS.7.RP.A.2A

What is the equation for this table? Use y=kx format.

• y=0.125x
• y=8x
• y=2x
• y=5x

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

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

• $y=16x$

• $y=8x$

• $x=8y$

• $x=16y$

• The relationship is not proportional

Tags

CCSS.7.RP.A.2C

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

• $y=9x$

• $x=9y$

• $y=18x$

• $x=18y$

• The relationship is not proportional

Tags

CCSS.7.RP.A.2C

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

• $x=8y$

• $y=8x$

• $x=5y$

• $y=5x$

• The relationship is not proportional

Tags

CCSS.7.RP.A.2C

A cellphone company charges $90 for 2 months of service. What would be the equation that represents this relationship?

• y=90x

• y=180

• x=180y

• y=45x

Answer explanation

Remember, you must find k, (k=y/x), from the graph and substitute that into the equation y=kx!

Tags

CCSS.7.EE.B.4

CCSS.7.RP.A.2

What is the unit rate in this proportional relationship?

• 60 miles/1 hour

• 120 miles/2 hours

• 1 mile/1 hour

Tags

CCSS.7.RP.A.2D

The graph above shows the price of games in dollars.  Is the graph proportional and how do you know?

• The graph is proportional  because it is linear.
• The graph is proportional because it is linear and passes through the origin.
• The graph is not proportional because it does not pass through the origin.
• The graph is not proportional because it is not linear and it does not pass through the origin.

Tags

CCSS.7.RP.A.2D

Which equation matches the graph?

• y = 60x
• y = 40x
• y = 80x
• y = 20x

Tags

CCSS.5.OA.B.3