Equivalent Mathematical Relationships Review

Groceries are delivered by a local service. Their charge is shown by the equation below. c = g + 5.75 Which descriptions best represents the values of the relationship?

• The grocery store charges $5.75 per item purchased at the store.

• The grocery store charges a $5.75 fee for delivery.

• The customer will only pay $5.75 for their entire order.

• The total cost of the order is the cost of delivery, $5.75.

Tags

6.6.C

Is the table proportional?

• Yes

• No

Is the table proportional?

• Yes

• No

Which makes more sense to solve this proportion?

• cost / dozen

• dozen / cost

The height of a building is proportional to the number of floors. The figure shows the height of a building with 7 floors.

What is the ratio of height of the building to the number of floors?

• 7 : 112

• 112 : 7

• 1 : 7

• 7 : 1

• 1 : 16

The height of a building is proportional to the number of floors. The figure shows the height of a building with 7 floors.

Because each floor is 16 feet high, how tall would the building be if there was 15 floors?

• 112 ft

• 1,680 ft

• 240 ft

• 500 ft

Does the table show a proportional relationship?

• yes

• no

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

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

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

• Every x term is a multiple of the previous term.

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

Is there a proportional relationship between x and y? Explain

• No, all ratios y/x are not equivalent.

• Yes, each x value and y value increase by 2.

• Yes, the difference between each x value and y value is 3.

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

The table shows the numbers of snare drum backbeats and bas guitar notes in a disco tune. Are the two quantities proportional? Explan.

• The quantities are not proportional. All the ratios of notes to backbeats are not equivalent.

• The quantities are not proportional. All the ratios of notes to backbeats are equivalent.

• The quantities are proportional. All the ratios of notes to backbeats are not equivalent.

• The quantities are proportional. All the ratios of notes to backbeats are equivalent.