Review Proportional Relationships, Tables, Graphs and Equations

Sally will earn $30 for every 5 hours that she babysits. Which of the following equations can be used to represent the proportional relationship?

• y = 1/6x +30

• y = 6x

• y = 5x + 6

• y = 6x +5

Proportional relationships must go through the origin. (0,0)

• True

• False

Which graph is non-proportional?

• A

• B

• C

• D

• y = 1/5x

• y = 5x

• y = 1/2x

What is the constant of proportionality? Use the format k = 2.

Why is the graph proportional?

• It is a straight line though the origin

• The points are connected

• It is a straight line

• The line goes through the origin

• Proportional, the rate of change is 5/3
• Non Proportional
• Proportional, the rate of change is 3/5
• Proportional, you add 2

What is the rate of change for the table below?

• 1/3

• 3/7

• 7/3

• 3

• 40 CALORIES PER MIN.
• 15 CALORIES PER MIN.
• 4 CALORIES PER MIN.
• 60 CALORIES PER MIN.

Select all equations that represent proportional relationships.

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