Proportional Reasoning: Tables, Equations

Find the unit rate: $3.60 for 3 pounds of apples.

• $1.00 per pound

• $3.60 per pound

• $1.20 per pound

• $1.10 per pound

How do you know if a graph is proportional?

• The graph is a straight line.

• The graph is a straight line that passes through the origin.

• The line passes through the origin.

• The graph is a curved line that does NOT pass through the origin.

Is this graph proportional?

• Yes

• No

Why does this graph show a non-proportional relationship?

• Because it is proportional

• It goes through the origin

• It does not go through the origin

• It is a straight line

• 12/3 = 16/p
• 12/16 = 3/p
• 12 + 16 = 3 + p
• 3/4 = 3/p

Is the graph proportional?

• yes

• no

Which statement about this graph is most true?

• It is proportional.

• The cleaner uses 1 cup of vinegar to every 2 cups of cleaner

• The cleaner uses 2 cups of vinegar for every 4 cups of cleaner

• All of the above.

Which is true about the graph?

• The insurance company pays $30 for every $20 the patient pays, making the slope of the graph ³/₂

• The insurance company pays $10 for every $10 the patient pays, making the slope of the graph 1

• The insurance company pays $30 for every $20 the patient pays, making the slope of the graph ¹/₂

• The insurance company pays $30 for every $10 the patient pays, making the slope of the graph ³/₂

Which statement below accurately represents the graph?

• $100 is earned for each hour worked

• $100 is earned for every 2 hours worked

• $500 is earned for every 8 hours worked

• $200 is earned for every 3 hours worked

Name the constant of proportionality.

• 8

• 16

• 6

• 3