Determine Proportions

Does the table represent a proportional relationship?

• Yes.

• No.

Does the equation x/y = 3 form a proportional relationship?

• Yes, because k = 3

• Yes, because k = 1/3

• No, because it does not form a line.

• No, because k is more than one value.

Determine whether each pair of ratios forms a proportion

• Proportion

• Not a Proportion

A proportion is two ratios that are ________.

• Equal

• variable

• unequal

• matching

To solve a proportion, you

• cross simpify

• cross multiply

• cross divide

Select the proportions that are equivalent to

Which is correctly set up to represent this story?"4 out of 5 students is Mrs. O'Neall's 7th grade class have a cell phone. If there are 365 total students in the 7th grade, how many would you expect to have a cell phone?"

A cake recipe calls for 1.5 cups of milk and 3 cups of flour. Seth made a mistake and used 5 cups of flour. How many cups of milk should he use to keep the proportions correct?

• 2.5 cups milk

• 1.75 cups milk

• 2 cups flour

• 2.25 cups milk

12 ounce shampoo bottle lasts Mike 16 weeks.  How long would you expect an 18-ounce bottle of the same brand to last him?

• 24 weeks

• 6 weeks

• 30 weeks

• 20 weeks

At the same time a 6 foot person casts a 2 foot shadow, a nearby flagpole casts a ten foot shadow.  How tall is the flagpole?

• 3 feet

• 10 feet

• 16 feet

• 30 feet