Analyze and Use Proportional Relationships

The equation y = 3.5x represents a proportional relationship. What is the constant of proportionality?

• y

• x

• 1/3.5

• 3.5

Tags

CCSS.7.RP.A.2B

Trey walked 2/5 of a mile in 1/4 of an hour. How fast did he walk in miles per hour?

• 1/10 miles per hour

• 5/8 miles per hour

• 2/5 miles per hour

• 8/5 or 1 3/5 miles per hour

Tags

CCSS.7.RP.A.1

The equation y = 0.45x represents a proportional relationship. What is the constant of proportionality?

• y

• x

• 0.45

• it can't be determined

Tags

CCSS.7.RP.A.2B

How do you know whether two quantities x and y are proportional?

• Every sum x + y is the same for related pairs of x and y.

• Every x term is multiple of the previous term

• Every difference x - y is the same for related pairs of x and y

• Every ratio of y/x for related pairs of x and y is equivalent

• You really have no way of knowing. It's a messed up world.

Tags

CCSS.7.RP.A.2A

Is there a proportional relationship between x and y?

• Yes the difference between each x and y value is the same.

• No, all ratios of x/y are greater than 1.

• No all the ratios of y/x are not equivalent.

• Yes, as each x increases by 1 each y value increases by $1.75

Tags

CCSS.7.RP.A.2A

What values for x and y would make this a proportional relationship?

• x = 6, y = 5

• x = 4, y = 5

• x = 5, y = 6

• There are no values to make this table proportional.

Tags

CCSS.7.RP.A.2B

A unit rate must always:

• be a complex fraction

• not be a fraction

• have a 1 in the denominator

• be a whole number

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Click on the values that are expressed as a unit rate.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

How do you find a unit cost?

• Divide the number of item by the cost

• Divide the cost by the number of items.

• What is a unit cost?

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Allie wanted to get cupcakes for her birthday party. She can get a 6-pack cupcakes for $13.20 or 14-pack of cupcakes for $32.90. Which cupcake deal is the best? How much per cupcake is the best deal?

• 6 pack, about $.45 per cupcake

• 6 pack, $2.25 per cupcake

• 14 pack; about $.43 per cupcake

• 14 pack; $2.35 per cupcake

• 6 pack, $2.20 per cupcake

Tags

CCSS.6.RP.A.3B