Comparing Constants of Proportionality

Which line shows a proportional relationship between x and y?

• Line L

• Line M

The graph represents how many chips Rebecca eats in an hour. The equation represents the rate Leila eats chips at.

Who will eat more chips in 3 hours?

• Rebecca will eat more chips

• Leila will eat more chips

• They will eat the same amount of chips

Erin and Lucia both have coffee shops. The graph represents how many cups of tea Erin made and the amount of sugar used. The equation represents how many cups of tea Lucia made and the amount of sugar used.

Who uses sugar at a faster rate?

• Erin uses sugar at a faster rate

• Lucia uses sugar at a faster rate

• They use sugar at the same rate

Who sold more water bottles?

• Seth

• Hayden

• They sold the same amount of water bottles

Whose expenses are higher?

• Ali

• Josie

• Their expenses are the same

The graph below represents how many cookies Fiona made in a day. The equation represents the rate at which Hazel makes cookies.

Who made more cookies in 4 days?

• Fiona

• Hazel

• They made the same amount of cookies

Who makes the least number of cakes in five days?

• Cody

• Dean

• They make the same amount of cakes

The graph below represents the rate at which Melanie listens to songs. The equation represents the rate at which Jesse listens to songs.

Over a day, who listens to more songs?

• Melanie

• Jesse

• They listen to the same amount of songs

The graph displays how many chocolates Jameson eats over the course of 5 days. The equation represents the rate at which Ezra eats chocolates.

Who eats more chocolates over 5 days?

• Jameson

• Ezra

• They eat the same amount of chocolate

The graph below represents how much milk Keegan drinks. The equation represents the rate at which Joey drinks milk.

Who drinks more milk?

• Keegan

• Joey

• They drink the same amount of milk