Proportional and Nonproportional Relationships Using a Table

The constant of proportionality can be written as an equation in the form

____ = _____ _____

• k = y/x

• y = k-x

• k = y+x

• What's k again?

Is this Proportional?

• Yes. the graph has a straight line and goes through the origin.

• No. the graph has a straight line and goes through the origin.

• Yes. The graph is not a straight line and doesn't go through theorigin.

• No. The graph is not a straight line and doesn't go through the origin.

How can we tell if a graph is proportional?

• It has a straight line and doesn't go through the origin.

• It goes through the origin but has a curvy line.

• It has a curvy line and doesn't go through the origin.

• It has a straight line and goes through the origin.

The machine packages ___ boxes in 2 minutes. (Use the graph)

• 300

• 100

• 50

• 450

Determine if the linear relationship is proportional or nonproportional. 

• Proportional

• Nonproportional

• Neither

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

• The relationship is not proportional

Identify the constant of proportionality in the table.

Mathematical Equivalence

ON

Determine the missing value in the table.

Which best describes the graph represented in this table?

•  proportional

• non-proportional

What is the constant of proportionality?