Ratios and Proportional Relationships

Is this graph proportional?

• Yes

• No

What makes a graph proportional?

• Linear

• The line goes through the origin

• Curvy line

• Linear and the line goes through the origin

What is the unit rate in this proportional relationship?

• 60 miles/1 hour

• 120 miles/ 2 hours

• 1 mile/ 1 hour

Find the unit rate:  $3.60 for 3 pounds of apples. How much does it cost for 1 pound of apples?

• $1.00 per pound

• $3.60 per pound

• $1.20 per pound

• $1.10 per pound

The table shows the amount of flour used to make waffles.   What is the unit rate for the amount of flour per waffle? 

• 8 cups per waffle

• ⅛ cups per waffle

• ¼ cups per waffle

• 9 ¼ cups per waffle

If there are 5 boys and 7 girls, write the ratio of girls to boys.

• 5 to 7

• 7 to 5

• 5 to 12

• 7 to 12

Does the table represent a proportional relationship?

• Yes.

• No.

Which graph is non-proportional?

• A

• B

• C

• D

Solve for A in the table.

• 40

• 10

• 9

• 45

Kevin is mixing paint to make orange. The ratio of red paint to yellow paint is 3 oz to 5 oz. How much yellow paint should he mix with 9 oz of red paint?

• 15 oz

• 30 oz

• 45 oz

• 11 oz