Proportional Relationships

Front

Three friends are buying seashells at the gift shop on the beach. Melanie buys 2 seashells for​ $0.80. Rosi buys 5 seashells for​ $2.00. Carlos buys 4 seashells for​ $1.60. Which graph represents the situation?

Back

Front

Three friends are buying seashells at the gift shop on the beach. Melanie buys 2 seashells for​ $0.80. Rosi buys 5 seashells for​ $2.00. Carlos buys 4 seashells for​ $1.60. What is the constant of proportionality if one exists?

Back

$0.40

Front

The graph shows the relationship between the distance a taxi travels and the cost of the taxi ride. Is the relationship​ proportional? Explain. What is true about the graph?

Back

The relationship is not proportional because the graph does not pass through the origin.

Front

The graph shows a proportional relationship between a​ family's distance from home and the time they spent driving. What is the constant of​ proportionality? What does the point​ (1,49) represent?

Back

1 hour and being 49 miles from home.

Front

The graph shows a proportional relationship between a​ family's distance from home and the time they spent driving. What is the constant of​ proportionality? Options: 1/65, 65, 1/49, 49

Back

49

Front

Error Analysis: Find the correct constant of proportionality of y to x. What is your friend's likely error?

Back

Your friend found x/y.

Front

In a certain​ city, there are two stores where you can rent DVDs. The table shows the cost y in dollars to rent x DVDs at store A. The graph represents the cost at store B. At which store is the cost of renting DVDs the​ least and what is the constant of proportionality?

Options:

Store A: $3.15

,

Store A: $3.20

,

Store B: $3.20

,

Store B: $3.15

Back

Store A: $3.15

Front

Does the graph show a proportional relationship between x and​ y?

Back

No, because the graph does not pass through the origin.

Front

A recipe calls for 3 ounces of flour(x) for every 2 ounces of sugar(y). Find the constant of proportionality.

Back

2/3

Front

Equation for proportional relationship between x hours and y miles when biking 11.2 miles in 1.4 hours.

Back

y = 8x